RSpec
Ruby on Rails
Ruby
method
have_var
v1_9_2_180 -
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Class: Object
- 1_8_6_287
- 1_8_7_72
- 1_8_7_330
- 1_9_1_378 (0)
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- 1_9_3_392 (0)
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json_create
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new
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version
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yaml_tag
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<=>
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=~
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==
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===
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!~
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[]
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[]=
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assert_Qundef
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check_signedness
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check_sizeof
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chmod
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class
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clone
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component
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convertible_int
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cp
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create_docfile
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create_makefile
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create_win32ole_makefile
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CSV
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dclone
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default_handler
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DelegateClass
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Digest
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extend
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gemfile
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hash
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have_func
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have_type
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have_var
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help
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httpd
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then
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= private
= protected
have_var(var, headers = nil, &b)
public
Returns whether or not the variable var can be found in the common header files, or within any headers that you provide. If found, a macro is passed as a preprocessor constant to the compiler using the variable name, in uppercase, prepended with ‘HAVE_’.
For example, if have_var(‘foo’) returned true, then the HAVE_FOO preprocessor macro would be passed to the compiler.
