pashmak

$__ismain__ variable

the $__ismain__ variable, is a general Boolean variable. this variable is used to check the current file, is the Main ran file or not.

for example, we have two files, my_program.pashm and lib.pashm. we want to know that in our scripts Is the current script main directly ran file?.

when you run in terminal:

pashmak my_program.pashm

the my_program.pashm file is ran directly.

my_program.pashm:

println($__ismain__)

import('lib.pashm')

the above code, prints value of this variable and also imports lib.pashm file.

lib.pashm:

println($__ismain__)

when i run my_program.pashm, output is this:

True
False

actually, value of this variable in my_program.pashm is True, but in lib.pashm is False.

now, when i run pashmak lib.pashm, output is True.

The $__ismain__ variable says that the current file is main ran file or not and you can check this.

for example, if we want to run a code only if our script is directly ran and is not imported from other script:

if $__ismain__
    # do something
endif

import_run and import_run_once functions

Now, you undrestand the $__ismain__ variable, But sometimes you need to run a file with True value for $__ismain__! This is too easy, you should use import_run instead of import and import_run_once instead of import_once.

for example, in main.pashm:

println('i am main program')
import $__dir__ + '/other.pashm'
import_run $__dir__ + '/other.pashm'

content of other.pashm:

println($__ismain__)

output of main.pashm:

False
True

Why? because in second import we used import_run instead of import, so, value of $__ismain__ is True.

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