From 8e1c3ef934cb272ee17e804b63ffc9128ea5a00c Mon Sep 17 00:00:00 2001 From: 30secondsofcode <30secondsofcode@gmail.com> Date: Thu, 31 May 2018 18:13:03 +0000 Subject: [PATCH] Travis build: 2110 --- README.md | 50 ++++++++++++++++++++ docs/adapter.html | 2 +- docs/array.html | 2 +- docs/browser.html | 2 +- docs/date.html | 2 +- docs/function.html | 2 +- docs/math.html | 2 +- docs/node.html | 2 +- docs/object.html | 2 +- docs/string.html | 2 +- docs/type.html | 2 +- docs/uncategorized.html | 101 ++++++++++++++++++++++++++++++++++++++++ docs/utility.html | 2 +- snippets/toHash.md | 26 ++++++----- tag_database | 1 + 15 files changed, 177 insertions(+), 23 deletions(-) create mode 100644 docs/uncategorized.html diff --git a/README.md b/README.md index 387924411..be043a7b0 100644 --- a/README.md +++ b/README.md @@ -470,6 +470,15 @@ average(1, 2, 3); +### Uncategorized + +
+View contents + +* [`toHash`](#tohash) + +
+ --- ## 🔌 Adapter @@ -8909,6 +8918,47 @@ yesNo('Foo', true); // true
[⬆ Back to top](#table-of-contents) +--- + ## Uncategorized + +### toHash + +Reduces a given Array-like into a value hash (keyed data store). + +Given an Iterable or Array-like structure, call `Array.prototype.reduce.call()` on the provided object to step over it and return an Object, keyed by the reference value. + +```js +const toHash = (object, key) => + Array.prototype.reduce.call( + object, + (acc, data, index) => ((acc[!key ? index : data[key]] = data), acc), + {} + ); +``` + +
+Examples + +```js +toHash([4, 3, 2, 1]); // { 0: 4, 1: 3, 2: 2, 1: 1 } +toHash([{ a: 'label' }], 'a'); // { label: { a: 'label' } } +// A more in depth example: +let users = [{ id: 1, first: 'Jon' }, { id: 2, first: 'Joe' }, { id: 3, first: 'Moe' }]; +let managers = [{ manager: 1, employees: [2, 3] }]; +// We use function here because we want a bindable reference, but a closure referencing the hash would work, too. +managers.forEach( + manager => + (manager.employees = manager.employees.map(function(id) { + return this[id]; + }, toHash(users, 'id'))) +); +managers; // [ { manager:1, employees: [ { id: 2, first: "Joe" }, { id: 3, first: "Moe" } ] } ] +``` + +
+ +
[⬆ Back to top](#table-of-contents) + ## Collaborators diff --git a/docs/adapter.html b/docs/adapter.html index ce7c2811f..990e8c542 100644 --- a/docs/adapter.html +++ b/docs/adapter.html @@ -79,7 +79,7 @@ document.getElementById('doc-drawer-checkbox').checked = false; } }, false); - }

logo 30 seconds of code Curated collection of useful JavaScript snippets that you can understand in 30 seconds or less.

 

Adapter

ary

Creates a function that accepts up to n arguments, ignoring any additional arguments.

Call the provided function, fn, with up to n arguments, using Array.slice(0,n) and the spread operator (...).

const ary = (fn, n) => (...args) => fn(...args.slice(0, n));
+      }
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Adapter
ary
Creates a function that accepts up to n arguments, ignoring any additional arguments.
Call the provided function, fn, with up to n arguments, using Array.slice(0,n) and the spread operator (...).
const ary = (fn, n) => (...args) => fn(...args.slice(0, n));
 
const firstTwoMax = ary(Math.max, 2);
 [[2, 6, 'a'], [8, 4, 6], [10]].map(x => firstTwoMax(...x)); // [6, 8, 10]
 
call
Given a key and a set of arguments, call them when given a context. Primarily useful in composition.
Use a closure to call a stored key with stored arguments.
const call = (key, ...args) => context => context[key](...args);
diff --git a/docs/array.html b/docs/array.html
index 60e8e5f70..3549e97c9 100644
--- a/docs/array.html
+++ b/docs/array.html
@@ -79,7 +79,7 @@
             document.getElementById('doc-drawer-checkbox').checked = false;
           }
         }, false);
-      }
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Array
all
Returns true if the provided predicate function returns true for all elements in a collection, false otherwise.
Use Array.every() to test if all elements in the collection return true based on fn. Omit the second argument, fn, to use Boolean as a default.
const all = (arr, fn = Boolean) => arr.every(fn);
+      }
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Array
all
Returns true if the provided predicate function returns true for all elements in a collection, false otherwise.
Use Array.every() to test if all elements in the collection return true based on fn. Omit the second argument, fn, to use Boolean as a default.
const all = (arr, fn = Boolean) => arr.every(fn);
 
all([4, 2, 3], x => x > 1); // true
 all([1, 2, 3]); // true
 
any
Returns true if the provided predicate function returns true for at least one element in a collection, false otherwise.
Use Array.some() to test if any elements in the collection return true based on fn. Omit the second argument, fn, to use Boolean as a default.
const any = (arr, fn = Boolean) => arr.some(fn);
diff --git a/docs/browser.html b/docs/browser.html
index 2822834cb..0ebac07cb 100644
--- a/docs/browser.html
+++ b/docs/browser.html
@@ -79,7 +79,7 @@
             document.getElementById('doc-drawer-checkbox').checked = false;
           }
         }, false);
-      }
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Browser
arrayToHtmlList
Converts the given array elements into <li> tags and appends them to the list of the given id.
Use Array.map(), document.querySelector(), and an anonymous inner closure to create a list of html tags.
const arrayToHtmlList = (arr, listID) =>
+      }
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Browser
arrayToHtmlList
Converts the given array elements into <li> tags and appends them to the list of the given id.
Use Array.map(), document.querySelector(), and an anonymous inner closure to create a list of html tags.
const arrayToHtmlList = (arr, listID) =>
   (el => (
     (el = document.querySelector('#' + listID)),
     (el.innerHTML += arr.map(item => `<li>${item}</li>`).join(''))
diff --git a/docs/date.html b/docs/date.html
index 3784361e5..9d6ad12e8 100644
--- a/docs/date.html
+++ b/docs/date.html
@@ -79,7 +79,7 @@
             document.getElementById('doc-drawer-checkbox').checked = false;
           }
         }, false);
-      }
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Date
formatDuration
Returns the human readable format of the given number of milliseconds.
Divide ms with the appropriate values to obtain the appropriate values for day, hour, minute, second and millisecond. Use Object.entries() with Array.filter() to keep only non-zero values. Use Array.map() to create the string for each value, pluralizing appropriately. Use String.join(', ') to combine the values into a string.
const formatDuration = ms => {
+      }
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Date
formatDuration
Returns the human readable format of the given number of milliseconds.
Divide ms with the appropriate values to obtain the appropriate values for day, hour, minute, second and millisecond. Use Object.entries() with Array.filter() to keep only non-zero values. Use Array.map() to create the string for each value, pluralizing appropriately. Use String.join(', ') to combine the values into a string.
const formatDuration = ms => {
   if (ms < 0) ms = -ms;
   const time = {
     day: Math.floor(ms / 86400000),
diff --git a/docs/function.html b/docs/function.html
index 9de0a94e3..bd72fdccf 100644
--- a/docs/function.html
+++ b/docs/function.html
@@ -79,7 +79,7 @@
             document.getElementById('doc-drawer-checkbox').checked = false;
           }
         }, false);
-      }
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Function
attempt
Attempts to invoke a function with the provided arguments, returning either the result or the caught error object.
Use a try... catch block to return either the result of the function or an appropriate error.
const attempt = (fn, ...args) => {
+      }
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Function
attempt
Attempts to invoke a function with the provided arguments, returning either the result or the caught error object.
Use a try... catch block to return either the result of the function or an appropriate error.
const attempt = (fn, ...args) => {
   try {
     return fn(...args);
   } catch (e) {
diff --git a/docs/math.html b/docs/math.html
index 16c4f36a4..da262ac60 100644
--- a/docs/math.html
+++ b/docs/math.html
@@ -79,7 +79,7 @@
             document.getElementById('doc-drawer-checkbox').checked = false;
           }
         }, false);
-      }
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Math
approximatelyEqual
Checks if two numbers are approximately equal to each other.
Use Math.abs() to compare the absolute difference of the two values to epsilon. Omit the third parameter, epsilon, to use a default value of 0.001.
const approximatelyEqual = (v1, v2, epsilon = 0.001) => Math.abs(v1 - v2) < epsilon;
+      }
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Math
approximatelyEqual
Checks if two numbers are approximately equal to each other.
Use Math.abs() to compare the absolute difference of the two values to epsilon. Omit the third parameter, epsilon, to use a default value of 0.001.
const approximatelyEqual = (v1, v2, epsilon = 0.001) => Math.abs(v1 - v2) < epsilon;
 
approximatelyEqual(Math.PI / 2.0, 1.5708); // true
 
average
Returns the average of two or more numbers.
Use Array.reduce() to add each value to an accumulator, initialized with a value of 0, divide by the length of the array.
const average = (...nums) => [...nums].reduce((acc, val) => acc + val, 0) / nums.length;
 
average(...[1, 2, 3]); // 2
diff --git a/docs/node.html b/docs/node.html
index 10db0b668..87a16bc4f 100644
--- a/docs/node.html
+++ b/docs/node.html
@@ -79,7 +79,7 @@
             document.getElementById('doc-drawer-checkbox').checked = false;
           }
         }, false);
-      }
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Node
atob
Decodes a string of data which has been encoded using base-64 encoding.
Create a Buffer for the given string with base-64 encoding and use Buffer.toString('binary') to return the decoded string.
const atob = str => new Buffer(str, 'base64').toString('binary');
+      }
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Node
atob
Decodes a string of data which has been encoded using base-64 encoding.
Create a Buffer for the given string with base-64 encoding and use Buffer.toString('binary') to return the decoded string.
const atob = str => new Buffer(str, 'base64').toString('binary');
 
atob('Zm9vYmFy'); // 'foobar'
 
btoa
Creates a base-64 encoded ASCII string from a String object in which each character in the string is treated as a byte of binary data.
Create a Buffer for the given string with binary encoding and use Buffer.toString('base64') to return the encoded string.
const btoa = str => new Buffer(str, 'binary').toString('base64');
 
btoa('foobar'); // 'Zm9vYmFy'
diff --git a/docs/object.html b/docs/object.html
index c1f1277c6..b31d45466 100644
--- a/docs/object.html
+++ b/docs/object.html
@@ -79,7 +79,7 @@
             document.getElementById('doc-drawer-checkbox').checked = false;
           }
         }, false);
-      }
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Object
bindAll
Binds methods of an object to the object itself, overwriting the existing method.
Use Array.forEach() to return a function that uses Function.apply() to apply the given context (obj) to fn for each function specified.
const bindAll = (obj, ...fns) =>
+      }
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Object
bindAll
Binds methods of an object to the object itself, overwriting the existing method.
Use Array.forEach() to return a function that uses Function.apply() to apply the given context (obj) to fn for each function specified.
const bindAll = (obj, ...fns) =>
   fns.forEach(
     fn => (
       (f = obj[fn]),
diff --git a/docs/string.html b/docs/string.html
index 3619764a5..acf5a2cf9 100644
--- a/docs/string.html
+++ b/docs/string.html
@@ -79,7 +79,7 @@
             document.getElementById('doc-drawer-checkbox').checked = false;
           }
         }, false);
-      }
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String
byteSize
Returns the length of a string in bytes.
Convert a given string to a Blob Object and find its size.
const byteSize = str => new Blob([str]).size;
+      }
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String
byteSize
Returns the length of a string in bytes.
Convert a given string to a Blob Object and find its size.
const byteSize = str => new Blob([str]).size;
 
byteSize('😀'); // 4
 byteSize('Hello World'); // 11
 
capitalize
Capitalizes the first letter of a string.
Use array destructuring and String.toUpperCase() to capitalize first letter, ...rest to get array of characters after first letter and then Array.join('') to make it a string again. Omit the lowerRest parameter to keep the rest of the string intact, or set it to true to convert to lowercase.
const capitalize = ([first, ...rest], lowerRest = false) =>
diff --git a/docs/type.html b/docs/type.html
index 5c82e3307..cb0ec44bf 100644
--- a/docs/type.html
+++ b/docs/type.html
@@ -79,7 +79,7 @@
             document.getElementById('doc-drawer-checkbox').checked = false;
           }
         }, false);
-      }
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Type
getType
Returns the native type of a value.
Returns lowercased constructor name of value, "undefined" or "null" if value is undefined or null.
const getType = v =>
+      }
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Type
getType
Returns the native type of a value.
Returns lowercased constructor name of value, "undefined" or "null" if value is undefined or null.
const getType = v =>
   v === undefined ? 'undefined' : v === null ? 'null' : v.constructor.name.toLowerCase();
 
getType(new Set([1, 2, 3])); // 'set'
 
is
Checks if the provided value is of the specified type.
Ensure the value is not undefined or null using Array.includes(), and compare the constructor property on the value with type to check if the provided value is of the specified type.
const is = (type, val) => ![, null].includes(val) && val.constructor === type;
diff --git a/docs/uncategorized.html b/docs/uncategorized.html
new file mode 100644
index 000000000..865bec87b
--- /dev/null
+++ b/docs/uncategorized.html
@@ -0,0 +1,101 @@
+Uncategorized - 30 seconds of code
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Uncategorized
toHash
Reduces a given Array-like into a value hash (keyed data store).
Given an Iterable or Array-like structure, call Array.prototype.reduce.call() on the provided object to step over it and return an Object, keyed by the reference value.
const toHash = (object, key) =>
+  Array.prototype.reduce.call(
+    object,
+    (acc, data, index) => ((acc[!key ? index : data[key]] = data), acc),
+    {}
+  );
+
toHash([4, 3, 2, 1]); // { 0: 4, 1: 3, 2: 2, 1: 1 }
+toHash([{ a: 'label' }], 'a'); // { label: { a: 'label' } }
+// A more in depth example:
+let users = [{ id: 1, first: 'Jon' }, { id: 2, first: 'Joe' }, { id: 3, first: 'Moe' }];
+let managers = [{ manager: 1, employees: [2, 3] }];
+// We use function here because we want a bindable reference, but a closure referencing the hash would work, too.
+managers.forEach(
+  manager =>
+    (manager.employees = manager.employees.map(function(id) {
+      return this[id];
+    }, toHash(users, 'id')))
+);
+managers; // [ { manager:1, employees: [ { id: 2, first: "Joe" }, { id: 3, first: "Moe" } ] } ]
+

\ No newline at end of file
diff --git a/docs/utility.html b/docs/utility.html
index fa61898f7..cc93b93d3 100644
--- a/docs/utility.html
+++ b/docs/utility.html
@@ -79,7 +79,7 @@
             document.getElementById('doc-drawer-checkbox').checked = false;
           }
         }, false);
-      }
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Utility
castArray
Casts the provided value as an array if it's not one.
Use Array.isArray() to determine if val is an array and return it as-is or encapsulated in an array accordingly.
const castArray = val => (Array.isArray(val) ? val : [val]);
+      }
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Utility
castArray
Casts the provided value as an array if it's not one.
Use Array.isArray() to determine if val is an array and return it as-is or encapsulated in an array accordingly.
const castArray = val => (Array.isArray(val) ? val : [val]);
 
castArray('foo'); // ['foo']
 castArray([1]); // [1]
 
cloneRegExp
Clones a regular expression.
Use new RegExp(), RegExp.source and RegExp.flags to clone the given regular expression.
const cloneRegExp = regExp => new RegExp(regExp.source, regExp.flags);
diff --git a/snippets/toHash.md b/snippets/toHash.md
index 1e176b15d..002fe8e92 100644
--- a/snippets/toHash.md
+++ b/snippets/toHash.md
@@ -5,24 +5,26 @@ Reduces a given Array-like into a value hash (keyed data store).
 Given an Iterable or Array-like structure, call `Array.prototype.reduce.call()` on the provided object to step over it and return an Object, keyed by the reference value.
 
 ```js
-const toHash = ( object, key ) =>
-  Array.prototype.reduce.call( object, ( acc, data, index ) => ( ( acc[ !key ? index : data[ key ] ] = data ), acc ), {} )
+const toHash = (object, key) =>
+  Array.prototype.reduce.call(
+    object,
+    (acc, data, index) => ((acc[!key ? index : data[key]] = data), acc),
+    {}
+  );
 ```
 
 ```js
-toHash([ 4,3,2,1 ]); // { 0: 4, 1: 3, 2: 2, 1: 1 }
-toHash([ { a: 'label' } ], 'a'); // { label: { a: 'label' } }
+toHash([4, 3, 2, 1]); // { 0: 4, 1: 3, 2: 2, 1: 1 }
+toHash([{ a: 'label' }], 'a'); // { label: { a: 'label' } }
 // A more in depth example:
-let users = [ { id: 1, first: 'Jon' }, { id: 2, first: 'Joe' }, { id: 3, first: 'Moe' } ];
-let managers = [ { manager: 1, employees: [ 2, 3 ] } ];
+let users = [{ id: 1, first: 'Jon' }, { id: 2, first: 'Joe' }, { id: 3, first: 'Moe' }];
+let managers = [{ manager: 1, employees: [2, 3] }];
 // We use function here because we want a bindable reference, but a closure referencing the hash would work, too.
-managers.forEach( manager =>
-  manager.employees = manager.employees.map(
-    function( id ){
+managers.forEach(
+  manager =>
+    (manager.employees = manager.employees.map(function(id) {
       return this[id];
-    },
-    toHash( users, 'id' )
-  )
+    }, toHash(users, 'id')))
 );
 managers; // [ { manager:1, employees: [ { id: 2, first: "Joe" }, { id: 3, first: "Moe" } ] } ]
 ```
diff --git a/tag_database b/tag_database
index 2fe2eb8f2..ad3dc3afc 100644
--- a/tag_database
+++ b/tag_database
@@ -270,6 +270,7 @@ toCamelCase:string,regexp
 toCurrency:utility
 toDecimalMark:utility,math
 toggleClass:browser
+toHash:uncategorized
 toKebabCase:string,regexp
 tomorrow:date
 toOrdinalSuffix:utility,math