flying-hero
96f6318101
新增: - backend/venv/ - Python 虚拟环境 - backend/start.sh - 启动脚本（使用虚拟环境） - backend/requirements.txt - 依赖列表 - .gitignore - 忽略虚拟环境和缓存文件 说明: - 每个项目使用独立虚拟环境 - 避免依赖冲突 - 启动脚本自动创建和激活虚拟环境
39 lines
1.1 KiB
JavaScript
39 lines
1.1 KiB
JavaScript
var baseToNumber = require('./_baseToNumber'),
|
|
baseToString = require('./_baseToString');
|
|
|
|
/**
|
|
* Creates a function that performs a mathematical operation on two values.
|
|
*
|
|
* @private
|
|
* @param {Function} operator The function to perform the operation.
|
|
* @param {number} [defaultValue] The value used for `undefined` arguments.
|
|
* @returns {Function} Returns the new mathematical operation function.
|
|
*/
|
|
function createMathOperation(operator, defaultValue) {
|
|
return function(value, other) {
|
|
var result;
|
|
if (value === undefined && other === undefined) {
|
|
return defaultValue;
|
|
}
|
|
if (value !== undefined) {
|
|
result = value;
|
|
}
|
|
if (other !== undefined) {
|
|
if (result === undefined) {
|
|
return other;
|
|
}
|
|
if (typeof value == 'string' || typeof other == 'string') {
|
|
value = baseToString(value);
|
|
other = baseToString(other);
|
|
} else {
|
|
value = baseToNumber(value);
|
|
other = baseToNumber(other);
|
|
}
|
|
result = operator(value, other);
|
|
}
|
|
return result;
|
|
};
|
|
}
|
|
|
|
module.exports = createMathOperation;
|