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Support Dynamic as function default return value.

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Stephen Chung
2020-09-26 16:27:38 +08:00
parent e62d1cd3ff
commit 03dce86328
7 changed files with 44 additions and 37 deletions
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28
doc/src/language/string-fn.md
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@@ -6,20 +6,20 @@ Built-in String Functions
The following standard methods (mostly defined in the [`MoreStringPackage`][packages] but excluded if
using a [raw `Engine`]) operate on [strings]:
| Function | Parameter(s) | Description |
| ------------------------- | ------------------------------------------------------------ | ------------------------------------------------------------------------------------------------- |
| `len` method and property | _none_ | returns the number of characters (not number of bytes) in the string |
| `pad` | character to pad, target length | pads the string with an character to at least a specified length |
| `+=` operator, `append` | character/string to append | Adds a character or a string to the end of another string |
| `clear` | _none_ | empties the string |
| `truncate` | target length | cuts off the string at exactly a specified number of characters |
| `contains` | character/sub-string to search for | checks if a certain character or sub-string occurs in the string |
| `index_of` | character/sub-string to search for, start index _(optional)_ | returns the index that a certain character or sub-string occurs in the string, or -1 if not found |
| `sub_string` | start index, length _(optional)_ | extracts a sub-string (to the end of the string if length is not specified) |
| `split` | delimiter character/string | splits the string by the specified delimiter, returning an [array] of string segments |
| `crop` | start index, length _(optional)_ | retains only a portion of the string (to the end of the string if length is not specified) |
| `replace` | target character/sub-string, replacement character/string | replaces a sub-string with another |
| `trim` | _none_ | trims the string of whitespace at the beginning and end |
| Function | Parameter(s) | Description |
| ------------------------- | ------------------------------------------------------------ | ----------------------------------------------------------------------------------------------------------------------- |
| `len` method and property | _none_ | returns the number of characters (not number of bytes) in the string |
| `pad` | character to pad, target length | pads the string with an character to at least a specified length |
| `+=` operator, `append` | character/string to append | Adds a character or a string to the end of another string |
| `clear` | _none_ | empties the string |
| `truncate` | target length | cuts off the string at exactly a specified number of characters |
| `contains` | character/sub-string to search for | checks if a certain character or sub-string occurs in the string |
| `index_of` | character/sub-string to search for, start index _(optional)_ | returns the index that a certain character or sub-string occurs in the string, or -1 if not found |
| `sub_string` | start index, length _(optional)_ | extracts a sub-string (to the end of the string if length is not specified) |
| `split` | delimiter character/string | splits the string by the specified delimiter, returning an [array] of string segments; not available under [`no_index`] |
| `crop` | start index, length _(optional)_ | retains only a portion of the string (to the end of the string if length is not specified) |
| `replace` | target character/sub-string, replacement character/string | replaces a sub-string with another |
| `trim` | _none_ | trims the string of whitespace at the beginning and end |
Examples
--------