When to use a Boolean as a flag?
Boolean variables are most commonly used as flags, to signal the presence or absence of some condition. For example, in the String.Compare(String, String, Boolean) method, the final parameter, ignoreCase, is a flag that indicates whether the comparison of two strings is case-insensitive (ignoreCase is true) or case-sensitive (ignoreCase is false).
How is the help string displayed in gflags?
The ‘help’ string is displayed when the user runs the application with the –help flag. You can define a flag in any source-code file in your executable. Only define a flag once! If you want to access a flag in more than one source file, DEFINE it in one file, and DECLARE it in the others.
How are Boolean values represented in a string?
The string representation of a Boolean is either “True” for a true value or “False” for a false value. The string representation of a Boolean value is defined by the read-only TrueString and FalseString fields. You use the ToString method to convert Boolean values to strings.
Which is the default build settings for gflags?
The default build settings are the build of a single-threaded static library which does not require any installation of the gflags subproject products. Finally, add your executable build target which uses gflags to parse the command arguments with dependency on the imported gflags library target:
What are the parameters of flag Bool function?
Parameters: This function accepts three parameters as mentioned above and described below: name: It is a string that specifies the name to be used for the flag. value: It is a boolean value that specifies the default value to be used by the flag.
How are variables converted to Boolean values in TerraForm?
Then, depending on where you specify overrides, the behavior can differ: Variables with boolean values in a tfvars file will likewise be converted to “0” and “1” values. Variables specified via the -var command line flag will be literal strings “true” and “false”, so care should be taken to explicitly use “0” or “1”.
How are Boolean values formatted into a string?
Formatting Boolean values. The string representation of a Boolean is either “True” for a true value or “False” for a false value. The string representation of a Boolean value is defined by the read-only TrueString and FalseString fields. You use the ToString method to convert Boolean values to strings.