78 lines
1.1 KiB
JavaScript
78 lines
1.1 KiB
JavaScript
|
export function parse_option(value, default_value) {
|
||
|
|
|
||
|
|
return "undefined" != typeof value ? value : default_value;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param {!number} count
|
||
|
|
* @returns {Array<Object>}
|
||
|
|
*/
|
||
|
|
|
||
|
|
export function create_object_array(count) {
|
||
|
|
|
||
|
|
const array = Array(count);
|
||
|
|
|
||
|
|
for (let i = 0; i < count; i++) {
|
||
|
|
|
||
|
|
array[i] = create_object();
|
||
|
|
}
|
||
|
|
|
||
|
|
return array;
|
||
|
|
}
|
||
|
|
|
||
|
|
export function create_arrays(count) {
|
||
|
|
|
||
|
|
const array = Array(count);
|
||
|
|
|
||
|
|
for (let i = 0; i < count; i++) {
|
||
|
|
|
||
|
|
array[i] = [];
|
||
|
|
}
|
||
|
|
|
||
|
|
return array;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param {!Object} obj
|
||
|
|
* @returns {Array<string>}
|
||
|
|
*/
|
||
|
|
|
||
|
|
export function get_keys(obj) {
|
||
|
|
|
||
|
|
return Object.keys(obj);
|
||
|
|
}
|
||
|
|
|
||
|
|
export function create_object() {
|
||
|
|
|
||
|
|
return Object.create(null);
|
||
|
|
}
|
||
|
|
|
||
|
|
export function concat(arrays) {
|
||
|
|
|
||
|
|
return [].concat.apply([], arrays);
|
||
|
|
}
|
||
|
|
|
||
|
|
export function sort_by_length_down(a, b) {
|
||
|
|
|
||
|
|
return b.length - a.length;
|
||
|
|
}
|
||
|
|
|
||
|
|
export function is_array(val) {
|
||
|
|
|
||
|
|
return val.constructor === Array;
|
||
|
|
}
|
||
|
|
|
||
|
|
export function is_string(val) {
|
||
|
|
|
||
|
|
return "string" == typeof val;
|
||
|
|
}
|
||
|
|
|
||
|
|
export function is_object(val) {
|
||
|
|
|
||
|
|
return "object" == typeof val;
|
||
|
|
}
|
||
|
|
|
||
|
|
export function is_function(val) {
|
||
|
|
|
||
|
|
return "function" == typeof val;
|
||
|
|
}
|