lang/bool.sh

Util functions for checking values/system.

has_fld()

True if the object has the given field.

is_bash3()

True if this function is invoked by bash 3.x process.

is_bash4()

True if this function is invoked by bash 4.x process.

is_bash5()

True if this function is invoked by bash 5.x process.

is_bool()

True if the given value can be a bool.

is_ec()

True if the value is an error (as def in this library).

is_empty()

True if an empty string.

is_eq()

True if values are equal (lexical).

is_exe()

True if the given argument corresponds to an executable.

is_false()

True if value is considered false in this library.

is_file()

True if it is a valid file.

is_float()

True if the given value can be a float (bc).

is_function()

True if the given name corresponds to a function.

is_gt()

True if one value is greater than another (ints only).

is_instanceof()

True if the object is instance of the given struct.

is_int()

True if the given value can be parsed as an int (bc).

is_linux()

Return true/0 if linux.

is_mac()

Return true/0 if mac.

is_ne()

True if values are not equal (lexical).

is_null()

True if the value is null.

is_object()

True if the given argument is a valid object.

is_set()

True if the value is set.

is_string()

True if the given value can be a string.

is_true()

True if value is considered true in this library.