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Configuration options for druntime
Distributed under the Boost Software License 1.0. (See accompanying file LICENSE)
Rainer Schuetze
nothrow @nogc string rt_configOption(string opt, scope rt_configCallBack dg = null, bool reverse = false);
get a druntime config option using standard configuration options opt name of the option to retreive dg if non-null, passes the option through this delegate and only returns its return value if non-null reverse reverse the default processing order cmdline/envvar/rt_options to allow overwriting settings in the delegate with values from higher priority
returns the options' value if - set on the command line as "--DRT-=value" (rt_cmdline_enabled enabled) - the environment variable "DRT_" is set (rt_envvars_enabled enabled) - rt_options[] contains an entry "=value" - null otherwise