Build, resolve #172

CONTRIBUTING.md

@@ -29,6 +29,7 @@ Here's what you can do to help:
   - Try to keep your snippets' code short and to the point. Use modern techniques and features. Make sure to test your code before submitting.
   - All snippets must be followed by one (more if necessary) test case after the code, on a new line, in the form of a comment, along with the expected output. The syntax for this is `myFunction('testInput') -> 'testOutput'`. Use multiline comments only if necessary.
   - Try to make your function name unique, so that it does not conflict with existing snippets.
+  - Snippet functions do not have to handle errors in input, unless it's necessary (e.g. a mathematical function that cannot be extended to negative numbers should handle negative input appropriately).
 - Snippets should be short (usually below 10 lines). If your snippet is longer than that, you can still submit it, and we can help you shorten it or figure out ways to improve it.
 - Snippets *should* solve real-world problems, no matter how simple.
 - Snippets *should* be abstract enough to be applied to different scenarios.

README.md

@@ -101,6 +101,8 @@
 * [Capitalize first letter of every word](#capitalize-first-letter-of-every-word)
 * [Capitalize first letter](#capitalize-first-letter)
 * [Check for palindrome](#check-for-palindrome)
+* [Convert string from camelcase](#convert-string-from-camelcase)
+* [Convert string to camelcase](#convert-string-to-camelcase)
 * [Reverse a string](#reverse-a-string)
 * [Sort characters in string (alphabetical)](#sort-characters-in-string-alphabetical)
 * [Truncate a string](#truncate-a-string)
@@ -175,7 +177,7 @@ const remove = (arr, func) =>
     arr.splice(arr.indexOf(val), 1); return acc.concat(val);
     }, [])
   : [];
-//remove([1, 2, 3, 4], n => n % 2 == 0) -> [2, 4]
+// remove([1, 2, 3, 4], n => n % 2 == 0) -> [2, 4]
 ```
 
 [⬆ back to top](#table-of-contents)
@@ -1152,6 +1154,37 @@ const palindrome = str => {
 
 [⬆ back to top](#table-of-contents)
 
+### Convert string from camelcase
+
+Use `replace()` to remove underscores, hyphens and spaces and convert words to camelcase.
+Omit the scond argument to use a default separator of '_'.
+
+```js
+const fromCamelCase = (str, separator = '_') => 
+  str.replace(/([a-z\d])([A-Z])/g, '$1' + separator + '$2')
+    .replace(/([A-Z]+)([A-Z][a-z\d]+)/g, '$1' + separator + '$2').toLowerCase();
+// decamelize('someDatabaseFieldName', ' ') -> 'some database field name'
+// decamelize('someLabelThatNeedsToBeCamelized', '-') -> 'some-label-that-needs-to-be-camelized'
+// decamelize('someJavascriptProperty', '_') -> 'some_javascript_property'
+```
+
+[⬆ back to top](#table-of-contents)
+
+### Convert string to camelcase
+
+Use `replace()` to remove underscores, hyphens and spaces and convert words to camelcase.
+
+```js
+const toCamelCase = str => 
+  str.replace(/^([A-Z])|[\s-_]+(\w)/g, (match, p1, p2, offset) =>  p2 ? p2.toUpperCase() : p1.toLowerCase());
+// camelize("some_database_field_name") -> 'someDatabaseFieldName'
+// camelize("Some label that needs to be camelized") -> 'someLabelThatNeedsToBeCamelized'
+// camelize("some-javascript-property") -> 'someJavascriptProperty'
+// camelize("some-mixed_string with spaces_underscores-and-hyphens") -> 'someMixedStringWithSpacesUnderscoresAndHyphens'
+```
+
+[⬆ back to top](#table-of-contents)
+
 ### Reverse a string
 
 Use array destructuring and `Array.reverse()` to reverse the order of the characters in the string.

scripts/lint-script.js

@@ -1,6 +1,7 @@
 /*
   This is the linter script that lints snippets.
   Run using `npm run linter`.
+  You might have to run `npm i -g semistandard` for this script to run properly.
 */
 // Load modules
 const fs = require('fs-extra'), cp = require('child_process'), path = require('path'), chalk = require('chalk');

snippets/array-remove.md

@@ -9,5 +9,5 @@ const remove = (arr, func) =>
     arr.splice(arr.indexOf(val), 1); return acc.concat(val);
     }, [])
   : [];
-//remove([1, 2, 3, 4], n => n % 2 == 0) -> [2, 4]
+// remove([1, 2, 3, 4], n => n % 2 == 0) -> [2, 4]
 ```

tag_database

@@ -10,7 +10,6 @@ array-without:array
 array-zip:array
 average-of-array-of-numbers:array
 bottom-visible:browser
-convert-string-to-camelcase:string
 capitalize-first-letter-of-every-word:string
 capitalize-first-letter:string
 chain-asynchronous-functions:function
@@ -20,10 +19,11 @@ clean-JSON-object:object
 collatz-algorithm:math
 compact:array
 compose-functions:function
+convert-string-from-camelcase:string
+convert-string-to-camelcase:string
 count-occurrences-of-a-value-in-array:array
 current-URL:browser
 curry:function
-convert-string-from-camelcase:string
 deep-flatten-array:array
 distance-between-two-points:math
 divisible-by-number:math