cstl_sys

Function CSTL_u16string_insert_n_at

Source 
pub unsafe extern "C" fn CSTL_u16string_insert_n_at(
    instance: CSTL_UTF16StringRef,
    off: usize,
    ptr: *const char16_t,
    count: usize,
    alloc: *mut CSTL_Alloc,
) -> bool
Expand description

Inserts the first count characters of the string at ptr at offset off in instance.

If off is outside of the range [instance, instance + CSTL_u16string_size(instance)] or if the length of the resulting string is greater than CSTL_u16string_max_size() this function has no effect and returns false, otherwise it returns true.