# Language System Library1.10.1¶

#include <std/sys.pat>

This namespace contains language support functions

## Functions¶

### std::assert(bool condition, str message)¶

Aborts evaluation and prints an error to the console if condition evaluates to false

Parameter

Description

condition

Condition that needs to be met

message

Message to be printed to the console if condition evaluated to false.

### std::assert_warn(bool condition, str message)¶

Prints a warning to the console if condition evaluates to false

Parameter

Description

condition

Condition that needs to be met

message

Message to be printed to the console if condition evaluated to false.

### std::env(str name) -> auto1.12.0¶

Gets the value of a environment variable specified in the Environment Variables tab

Note

The type returned from this function depends on the type specified in the Environment Variables tab.

Parameter

Description

var

Name of environment variable to query

return

Integer, floating point, bool or string with the value of that env var

### std::sizeof_pack(auto ... pack) -> u1281.14.0¶

Gets the number of values contained in a parameter pack

Parameter

Description

pack

Parameter pack

return

Number of values contained in parameter pack