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Improve String.format() documentation

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This commit is contained in:
Haoyu Qiu 2022-06-27 10:56:01 +08:00
parent 898e09e2e6
commit 25c7f567dd
1 changed files with 16 additions and 1 deletions
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17
doc/classes/String.xml
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@ -180,7 +180,22 @@
<argument index="0" name="values" type="Variant" />
<argument index="1" name="placeholder" type="String" default="&quot;{_}&quot;" />
<description>
Formats the string by replacing all occurrences of [code]placeholder[/code] with [code]values[/code].
Formats the string by replacing all occurrences of [code]placeholder[/code] with the elements of [code]values[/code].
[code]values[/code] can be a [Dictionary] or an [Array]. Any underscores in [code]placeholder[/code] will be replaced with the corresponding keys in advance. Array elements use their index as keys.
[codeblock]
# Prints: Waiting for Godot is a play by Samuel Beckett, and Godot Engine is named after it.
var use_array_values = "Waiting for {0} is a play by {1}, and {0} Engine is named after it."
print(use_array_values.format(["Godot", "Samuel Beckett"]))
# Prints: User 42 is Godot.
print("User {id} is {name}.".format({"id": 42, "name": "Godot"}))
[/codeblock]
Some additional handling is performed when [code]values[/code] is an array. If [code]placeholder[/code] does not contain an underscore, the elements of the array will be used to replace one occurrence of the placeholder in turn; If an array element is another 2-element array, it'll be interpreted as a key-value pair.
[codeblock]
# Prints: User 42 is Godot.
print("User {} is {}.".format([42, "Godot"], "{}"))
print("User {id} is {name}.".format([["id", 42], ["name", "Godot"]]))
[/codeblock]
</description>
</method>
<method name="get_base_dir" qualifiers="const">