method

thread_variable?

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thread_variable?(p1) public

Returns true if the given string (or symbol) exists as a thread-local variable.

me = Thread.current
me.thread_variable_set(:oliver, "a")
me.thread_variable?(:oliver)    #=> true
me.thread_variable?(:stanley)   #=> false

Note that these are not fiber local variables. Please see Thread#[] and Thread#thread_variable_get for more details.

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static VALUE
rb_thread_variable_p(VALUE thread, VALUE key)
{
    VALUE locals;
    ID id = rb_check_id(&key);

    if (!id) return Qfalse;

    locals = rb_ivar_get(thread, id_locals);

    if (rb_hash_lookup(locals, ID2SYM(id)) != Qnil) {
        return Qtrue;
    }
    else {
        return Qfalse;
    }

    return Qfalse;
}

thread_variable?

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