# xstrings

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Go package [xstrings](https://godoc.org/github.com/huandu/xstrings) is a collection of string functions, which are widely used in other languages but absent in Go package [strings](http://golang.org/pkg/strings).

All functions are well tested and carefully tuned for performance.

## Propose a new function

Please review [contributing guideline](CONTRIBUTING.md) and [create new issue](https://github.com/huandu/xstrings/issues) to state why it should be included.

## Install

Use `go get` to install this library.

    go get github.com/huandu/xstrings

## API document

See [GoDoc](https://godoc.org/github.com/huandu/xstrings) for full document.

## Function list

Go functions have a unique naming style. One, who has experience in other language but new in Go, may have difficulties to find out right string function to use.

Here is a list of functions in [strings](http://golang.org/pkg/strings) and [xstrings](https://godoc.org/github.com/huandu/xstrings) with enough extra information about how to map these functions to their friends in other languages. Hope this list could be helpful for fresh gophers.

### Package `xstrings` functions

_Keep this table sorted by Function in ascending order._

| Function                                                                          | Friends                                                                         | #                                                   |
| --------------------------------------------------------------------------------- | ------------------------------------------------------------------------------- | --------------------------------------------------- |
| [Center](https://godoc.org/github.com/huandu/xstrings#Center)                     | `str.center` in Python; `String#center` in Ruby                                 | [#30](https://github.com/huandu/xstrings/issues/30) |
| [Count](https://godoc.org/github.com/huandu/xstrings#Count)                       | `String#count` in Ruby                                                          | [#16](https://github.com/huandu/xstrings/issues/16) |
| [Delete](https://godoc.org/github.com/huandu/xstrings#Delete)                     | `String#delete` in Ruby                                                         | [#17](https://github.com/huandu/xstrings/issues/17) |
| [ExpandTabs](https://godoc.org/github.com/huandu/xstrings#ExpandTabs)             | `str.expandtabs` in Python                                                      | [#27](https://github.com/huandu/xstrings/issues/27) |
| [FirstRuneToLower](https://godoc.org/github.com/huandu/xstrings#FirstRuneToLower) | `lcfirst` in PHP or Perl                                                        | [#15](https://github.com/huandu/xstrings/issues/15) |
| [FirstRuneToUpper](https://godoc.org/github.com/huandu/xstrings#FirstRuneToUpper) | `String#capitalize` in Ruby; `ucfirst` in PHP or Perl                           | [#15](https://github.com/huandu/xstrings/issues/15) |
| [Insert](https://godoc.org/github.com/huandu/xstrings#Insert)                     | `String#insert` in Ruby                                                         | [#18](https://github.com/huandu/xstrings/issues/18) |
| [LastPartition](https://godoc.org/github.com/huandu/xstrings#LastPartition)       | `str.rpartition` in Python; `String#rpartition` in Ruby                         | [#19](https://github.com/huandu/xstrings/issues/19) |
| [LeftJustify](https://godoc.org/github.com/huandu/xstrings#LeftJustify)           | `str.ljust` in Python; `String#ljust` in Ruby                                   | [#28](https://github.com/huandu/xstrings/issues/28) |
| [Len](https://godoc.org/github.com/huandu/xstrings#Len)                           | `mb_strlen` in PHP                                                              | [#23](https://github.com/huandu/xstrings/issues/23) |
| [Partition](https://godoc.org/github.com/huandu/xstrings#Partition)               | `str.partition` in Python; `String#partition` in Ruby                           | [#10](https://github.com/huandu/xstrings/issues/10) |
| [Reverse](https://godoc.org/github.com/huandu/xstrings#Reverse)                   | `String#reverse` in Ruby; `strrev` in PHP; `reverse` in Perl                    | [#7](https://github.com/huandu/xstrings/issues/7)   |
| [RightJustify](https://godoc.org/github.com/huandu/xstrings#RightJustify)         | `str.rjust` in Python; `String#rjust` in Ruby                                   | [#29](https://github.com/huandu/xstrings/issues/29) |
| [RuneWidth](https://godoc.org/github.com/huandu/xstrings#RuneWidth)               | -                                                                               | [#27](https://github.com/huandu/xstrings/issues/27) |
| [Scrub](https://godoc.org/github.com/huandu/xstrings#Scrub)                       | `String#scrub` in Ruby                                                          | [#20](https://github.com/huandu/xstrings/issues/20) |
| [Shuffle](https://godoc.org/github.com/huandu/xstrings#Shuffle)                   | `str_shuffle` in PHP                                                            | [#13](https://github.com/huandu/xstrings/issues/13) |
| [ShuffleSource](https://godoc.org/github.com/huandu/xstrings#ShuffleSource)       | `str_shuffle` in PHP                                                            | [#13](https://github.com/huandu/xstrings/issues/13) |
| [Slice](https://godoc.org/github.com/huandu/xstrings#Slice)                       | `mb_substr` in PHP                                                              | [#9](https://github.com/huandu/xstrings/issues/9)   |
| [Squeeze](https://godoc.org/github.com/huandu/xstrings#Squeeze)                   | `String#squeeze` in Ruby                                                        | [#11](https://github.com/huandu/xstrings/issues/11) |
| [Successor](https://godoc.org/github.com/huandu/xstrings#Successor)               | `String#succ` or `String#next` in Ruby                                          | [#22](https://github.com/huandu/xstrings/issues/22) |
| [SwapCase](https://godoc.org/github.com/huandu/xstrings#SwapCase)                 | `str.swapcase` in Python; `String#swapcase` in Ruby                             | [#12](https://github.com/huandu/xstrings/issues/12) |
| [ToCamelCase](https://godoc.org/github.com/huandu/xstrings#ToCamelCase)           | `String#camelize` in RoR                                                        | [#1](https://github.com/huandu/xstrings/issues/1)   |
| [ToKebab](https://godoc.org/github.com/huandu/xstrings#ToKebabCase)               | -                                                                               | [#41](https://github.com/huandu/xstrings/issues/41) |
| [ToSnakeCase](https://godoc.org/github.com/huandu/xstrings#ToSnakeCase)           | `String#underscore` in RoR                                                      | [#1](https://github.com/huandu/xstrings/issues/1)   |
| [Translate](https://godoc.org/github.com/huandu/xstrings#Translate)               | `str.translate` in Python; `String#tr` in Ruby; `strtr` in PHP; `tr///` in Perl | [#21](https://github.com/huandu/xstrings/issues/21) |
| [Width](https://godoc.org/github.com/huandu/xstrings#Width)                       | `mb_strwidth` in PHP                                                            | [#26](https://github.com/huandu/xstrings/issues/26) |
| [WordCount](https://godoc.org/github.com/huandu/xstrings#WordCount)               | `str_word_count` in PHP                                                         | [#14](https://github.com/huandu/xstrings/issues/14) |
| [WordSplit](https://godoc.org/github.com/huandu/xstrings#WordSplit)               | -                                                                               | [#14](https://github.com/huandu/xstrings/issues/14) |

### Package `strings` functions

_Keep this table sorted by Function in ascending order._

| Function                                                        | Friends                                                                             |
| --------------------------------------------------------------- | ----------------------------------------------------------------------------------- |
| [Contains](http://golang.org/pkg/strings/#Contains)             | `String#include?` in Ruby                                                           |
| [ContainsAny](http://golang.org/pkg/strings/#ContainsAny)       | -                                                                                   |
| [ContainsRune](http://golang.org/pkg/strings/#ContainsRune)     | -                                                                                   |
| [Count](http://golang.org/pkg/strings/#Count)                   | `str.count` in Python; `substr_count` in PHP                                        |
| [EqualFold](http://golang.org/pkg/strings/#EqualFold)           | `stricmp` in PHP; `String#casecmp` in Ruby                                          |
| [Fields](http://golang.org/pkg/strings/#Fields)                 | `str.split` in Python; `split` in Perl; `String#split` in Ruby                      |
| [FieldsFunc](http://golang.org/pkg/strings/#FieldsFunc)         | -                                                                                   |
| [HasPrefix](http://golang.org/pkg/strings/#HasPrefix)           | `str.startswith` in Python; `String#start_with?` in Ruby                            |
| [HasSuffix](http://golang.org/pkg/strings/#HasSuffix)           | `str.endswith` in Python; `String#end_with?` in Ruby                                |
| [Index](http://golang.org/pkg/strings/#Index)                   | `str.index` in Python; `String#index` in Ruby; `strpos` in PHP; `index` in Perl     |
| [IndexAny](http://golang.org/pkg/strings/#IndexAny)             | -                                                                                   |
| [IndexByte](http://golang.org/pkg/strings/#IndexByte)           | -                                                                                   |
| [IndexFunc](http://golang.org/pkg/strings/#IndexFunc)           | -                                                                                   |
| [IndexRune](http://golang.org/pkg/strings/#IndexRune)           | -                                                                                   |
| [Join](http://golang.org/pkg/strings/#Join)                     | `str.join` in Python; `Array#join` in Ruby; `implode` in PHP; `join` in Perl        |
| [LastIndex](http://golang.org/pkg/strings/#LastIndex)           | `str.rindex` in Python; `String#rindex`; `strrpos` in PHP; `rindex` in Perl         |
| [LastIndexAny](http://golang.org/pkg/strings/#LastIndexAny)     | -                                                                                   |
| [LastIndexFunc](http://golang.org/pkg/strings/#LastIndexFunc)   | -                                                                                   |
| [Map](http://golang.org/pkg/strings/#Map)                       | `String#each_codepoint` in Ruby                                                     |
| [Repeat](http://golang.org/pkg/strings/#Repeat)                 | operator `*` in Python and Ruby; `str_repeat` in PHP                                |
| [Replace](http://golang.org/pkg/strings/#Replace)               | `str.replace` in Python; `String#sub` in Ruby; `str_replace` in PHP                 |
| [Split](http://golang.org/pkg/strings/#Split)                   | `str.split` in Python; `String#split` in Ruby; `explode` in PHP; `split` in Perl    |
| [SplitAfter](http://golang.org/pkg/strings/#SplitAfter)         | -                                                                                   |
| [SplitAfterN](http://golang.org/pkg/strings/#SplitAfterN)       | -                                                                                   |
| [SplitN](http://golang.org/pkg/strings/#SplitN)                 | `str.split` in Python; `String#split` in Ruby; `explode` in PHP; `split` in Perl    |
| [Title](http://golang.org/pkg/strings/#Title)                   | `str.title` in Python                                                               |
| [ToLower](http://golang.org/pkg/strings/#ToLower)               | `str.lower` in Python; `String#downcase` in Ruby; `strtolower` in PHP; `lc` in Perl |
| [ToLowerSpecial](http://golang.org/pkg/strings/#ToLowerSpecial) | -                                                                                   |
| [ToTitle](http://golang.org/pkg/strings/#ToTitle)               | -                                                                                   |
| [ToTitleSpecial](http://golang.org/pkg/strings/#ToTitleSpecial) | -                                                                                   |
| [ToUpper](http://golang.org/pkg/strings/#ToUpper)               | `str.upper` in Python; `String#upcase` in Ruby; `strtoupper` in PHP; `uc` in Perl   |
| [ToUpperSpecial](http://golang.org/pkg/strings/#ToUpperSpecial) | -                                                                                   |
| [Trim](http://golang.org/pkg/strings/#Trim)                     | `str.strip` in Python; `String#strip` in Ruby; `trim` in PHP                        |
| [TrimFunc](http://golang.org/pkg/strings/#TrimFunc)             | -                                                                                   |
| [TrimLeft](http://golang.org/pkg/strings/#TrimLeft)             | `str.lstrip` in Python; `String#lstrip` in Ruby; `ltrim` in PHP                     |
| [TrimLeftFunc](http://golang.org/pkg/strings/#TrimLeftFunc)     | -                                                                                   |
| [TrimPrefix](http://golang.org/pkg/strings/#TrimPrefix)         | -                                                                                   |
| [TrimRight](http://golang.org/pkg/strings/#TrimRight)           | `str.rstrip` in Python; `String#rstrip` in Ruby; `rtrim` in PHP                     |
| [TrimRightFunc](http://golang.org/pkg/strings/#TrimRightFunc)   | -                                                                                   |
| [TrimSpace](http://golang.org/pkg/strings/#TrimSpace)           | `str.strip` in Python; `String#strip` in Ruby; `trim` in PHP                        |
| [TrimSuffix](http://golang.org/pkg/strings/#TrimSuffix)         | `String#chomp` in Ruby; `chomp` in Perl                                             |

## License

This library is licensed under MIT license. See LICENSE for details.
