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| author | Minh Nguyễn <mxn@1ec5.org> | 2018-03-16 18:42:53 -0700 |
|---|---|---|
| committer | Fabian Guerra <fabian.guerra@mapbox.com> | 2018-03-28 19:35:58 -0400 |
| commit | 3f02c5e1a1fa619dadc583d22b5d83cb889cffaa (patch) | |
| tree | f3442c291f289cdb8e9b612bc93526a8787b4200 | |
| parent | 5ce7411c6e623bf40e47b4580a421cf4d8f3202b (diff) | |
| download | qtlocation-mapboxgl-3f02c5e1a1fa619dadc583d22b5d83cb889cffaa.tar.gz | |
[ios, macos] Documented mgl_join:
| -rw-r--r-- | platform/darwin/docs/guides/Predicates and Expressions.md | 26 |
1 files changed, 11 insertions, 15 deletions
diff --git a/platform/darwin/docs/guides/Predicates and Expressions.md b/platform/darwin/docs/guides/Predicates and Expressions.md index 84e95876f8..d1e809ef09 100644 --- a/platform/darwin/docs/guides/Predicates and Expressions.md +++ b/platform/darwin/docs/guides/Predicates and Expressions.md @@ -183,10 +183,18 @@ Initializer parameter | Format string syntax ### Mapbox-specific functions For compatibility with the Mapbox Style Specification, the following functions -are defined by this SDK for use with style layers. Because these functions are -not predefined by `NSExpression`, you must use the +are defined by this SDK. When setting a style layer property, you can call these +functions just like the predefined functions above, using either the +`+[NSExpression expressionForFunction:arguments:]` method or a convenient format +string syntax: + +Initializer parameter | Format string syntax | Arguments | Returns +----------------------|----------------------|-----------|-------- +`mgl_join:` | `mgl_join({'Old', 'MacDonald'})` | An aggregate expression or `NSArray` constant value expression containing one or more `NSExpression`s, each evaluating to a string. | An `NSString` object (the result of concatenating together all the elements of an array in order). + +The following custom functions are also available with the `+[NSExpression expressionForFunction:selectorName:arguments:]` method or the -`FUNCTION()` format string syntax instead. +`FUNCTION()` format string syntax: <table> <thead> @@ -310,18 +318,6 @@ not predefined by `NSExpression`, you must use the </td> </tr> <tr> - <td><code>stringByAppendingString:</code></td> - <td> - An `NSExpression` that evaluates to a string. - </td> - <td> - One or more `NSExpression`s, each evaluating to a string. - </td> - <td> - The target string with each of the argument strings appended in order. - </td> -</tr> -<tr> <td><code>stringValue</code></td> <td> An `NSExpression` that evaluates to a Boolean value, number, or string. |