[函数定义和调用](5.function/funcDefAndCall.md) [函数参数](5.function/funcParameter.md) [函数返回值](5.function/funcReturn.md) [作用域](5.function/variableScope.md) [函数形参传递](5.function/variableTransfer.md) [匿名函数](5.function/anonymousFunc.md) [高阶函数](5.function/higherOrderFunc.md) [闭包](5.function/closureFunction.md) [defer语句](5.function/defer.md)