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.. title:: clang-tidy - google-objc-global-variable-declaration
google-objc-global-variable-declaration
=======================================
Finds global variable declarations in Objective-C files that do not follow the
pattern of variable names in Google's Objective-C Style Guide.
The corresponding style guide rule:
https://google.github.io/styleguide/objcguide.html#variable-names
All the global variables should follow the pattern of ``g[A-Z].*`` (variables) or
``k[A-Z].*`` (constants). The check will suggest a variable name that follows the
pattern if it can be inferred from the original name.
For code:
.. code-block:: objc
static NSString* myString = @"hello";
The fix will be:
.. code-block:: objc
static NSString* gMyString = @"hello";
Another example of constant:
.. code-block:: objc
static NSString* const myConstString = @"hello";
The fix will be:
.. code-block:: objc
static NSString* const kMyConstString = @"hello";
However for code that prefixed with non-alphabetical characters like:
.. code-block:: objc
static NSString* __anotherString = @"world";
The check will give a warning message but will not be able to suggest a fix. The
user needs to fix it on their own.
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