diff --git a/README.md b/README.md index 240c2d148..cb8caefdf 100644 --- a/README.md +++ b/README.md @@ -2327,9 +2327,9 @@ The `func` is invoked with three arguments (`value, index, array`). const remove = (arr, func) => Array.isArray(arr) ? arr.filter(func).reduce((acc, val) => { - arr.splice(arr.indexOf(val), 1); - return acc.concat(val); - }, []) + arr.splice(arr.indexOf(val), 1); + return acc.concat(val); + }, []) : []; ``` @@ -4730,6 +4730,7 @@ const checkProp = (predicate, prop) => obj => !!predicate(obj[prop]); + const lengthIs4 = checkProp(l => l === 4, 'length'); lengthIs4([]); // false lengthIs4([1,2,3,4]); // true @@ -8834,7 +8835,7 @@ isBoolean(false); // true ### isEmpty -Returns true if the a value is an empty object, collection, map or set, has no enumerable properties or is any type that is not considered a collection. +Returns true if the a value is an empty object, collection, has no enumerable properties or is any type that is not considered a collection. Check if the provided value is `null` or if its `length` is equal to `0`. @@ -8846,8 +8847,6 @@ const isEmpty = val => val == null || !(Object.keys(val) || val).length; Examples ```js -isEmpty(new Map()); // true -isEmpty(new Set()); // true isEmpty([]); // true isEmpty({}); // true isEmpty(''); // true diff --git a/docs/function.html b/docs/function.html index 386e09d76..d17cca87e 100644 --- a/docs/function.html +++ b/docs/function.html @@ -150,6 +150,7 @@ console.log< + const lengthIs4 = checkProp(l => l === 4, 'length'); lengthIs4([]); // false lengthIs4([1,2,3,4]); // true diff --git a/docs/index.html b/docs/index.html index 351585d40..272e522ef 100644 --- a/docs/index.html +++ b/docs/index.html @@ -413,9 +413,9 @@

remove

Removes elements from an array for which the given function returns false.

Use Array.prototype.filter() to find array elements that return truthy values and Array.prototype.reduce() to remove elements using Array.prototype.splice(). The func is invoked with three arguments (value, index, array).

const remove = (arr, func) =>
   Array.isArray(arr)
     ? arr.filter(func).reduce((acc, val) => {
-      arr.splice(arr.indexOf(val), 1);
-      return acc.concat(val);
-    }, [])
+        arr.splice(arr.indexOf(val), 1);
+        return acc.concat(val);
+      }, [])
     : [];
 
remove([1, 2, 3, 4], n => n % 2 === 0); // [2, 4]

sample

Returns a random element from an array.

Use Math.random() to generate a random number, multiply it by length and round it off to the nearest whole number using Math.floor(). This method also works with strings.

const sample = arr => arr[Math.floor(Math.random() * arr.length)];
diff --git a/docs/type.html b/docs/type.html
index e38611ea9..840d0610e 100644
--- a/docs/type.html
+++ b/docs/type.html
@@ -117,10 +117,8 @@

isBoolean

Checks if the given argument is a native boolean element.

Use typeof to check if a value is classified as a boolean primitive.

const isBoolean = val => typeof val === 'boolean';
 
isBoolean(null); // false
 isBoolean(false); // true
-

isEmpty

Returns true if the a value is an empty object, collection, map or set, has no enumerable properties or is any type that is not considered a collection.

Check if the provided value is null or if its length is equal to 0.

const isEmpty = val => val == null || !(Object.keys(val) || val).length;
-
isEmpty(new Map()); // true
-isEmpty(new Set()); // true
-isEmpty([]); // true
+

isEmpty

Returns true if the a value is an empty object, collection, has no enumerable properties or is any type that is not considered a collection.

Check if the provided value is null or if its length is equal to 0.

const isEmpty = val => val == null || !(Object.keys(val) || val).length;
+
isEmpty([]); // true
 isEmpty({}); // true
 isEmpty(''); // true
 isEmpty([1, 2]); // false
diff --git a/snippets/checkProp.md b/snippets/checkProp.md
index 4644eb666..ef740e3e8 100644
--- a/snippets/checkProp.md
+++ b/snippets/checkProp.md
@@ -15,6 +15,7 @@ const checkProp = (predicate, prop) => obj => !!predicate(obj[prop]);
 
 
 
+
 const lengthIs4 = checkProp(l => l === 4, 'length');
 lengthIs4([]); // false
 lengthIs4([1,2,3,4]); // true
diff --git a/snippets/remove.md b/snippets/remove.md
index 58de9c2e0..a8c472774 100644
--- a/snippets/remove.md
+++ b/snippets/remove.md
@@ -9,9 +9,9 @@ The `func` is invoked with three arguments (`value, index, array`).
 const remove = (arr, func) =>
   Array.isArray(arr)
     ? arr.filter(func).reduce((acc, val) => {
-      arr.splice(arr.indexOf(val), 1);
-      return acc.concat(val);
-    }, [])
+        arr.splice(arr.indexOf(val), 1);
+        return acc.concat(val);
+      }, [])
     : [];
 ```
 
diff --git a/test/_30s.js b/test/_30s.js
index 194dd4829..c9873d4dc 100644
--- a/test/_30s.js
+++ b/test/_30s.js
@@ -1001,9 +1001,9 @@ const reject = (pred, array) => array.filter((...args) => !pred(...args));
 const remove = (arr, func) =>
   Array.isArray(arr)
     ? arr.filter(func).reduce((acc, val) => {
-      arr.splice(arr.indexOf(val), 1);
-      return acc.concat(val);
-    }, [])
+        arr.splice(arr.indexOf(val), 1);
+        return acc.concat(val);
+      }, [])
     : [];
 const removeNonASCII = str => str.replace(/[^\x20-\x7E]/g, '');
 const renameKeys = (keysMap, obj) =>