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runtime

runtime is a Starlark module provides Go and app runtime information.

Functions

uptime()

Returns the uptime of the current process in time.duration.

Examples

basic

Returns the uptime of the current process immediately.

load("runtime", "uptime")
print(uptime())
# Output: 883.583µs

getenv(key, default=None)

Returns the value of the environment variable key as a string if it exists, or default if it doesn't.

Examples

basic

Returns the value of the environment variable PATH if it exists, or None if it doesn't.

load("runtime", "getenv")
print(getenv("PATH"))
# Output: /usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin

putenv(key, value)

Sets the value of the environment variable named by the key, returning an error if any.

Examples

basic

Sets the environment variable STARLET_TEST to the value 123456.

load("runtime", "putenv")
putenv("STARLET_TEST", 123456)

setenv(key, value)

Sets the value of the environment variable named by the key, returning an error if any. Alias of putenv.

Examples

basic

Sets the environment variable STARLET_TEST to the value ABC.

load("runtime", "setenv")
setenv("STARLET_TEST", "ABC")

unsetenv(key)

Unsets a single environment variable.

Examples

basic

Unsets the environment variable STARLET_TEST.

load("runtime", "unsetenv")
unsetenv("STARLET_TEST")