anonymous-function

问题 This question is about fun() vs a lambda block definitions and scopes. i have tried define the expressions in two ways. Here is what i have tried: val myFunction = fun(){ println("i am in a function") } //but i also tried doing this: val myFunction = { println("i am in a lambda") } my problem is i do not know if they are equivalent and same thing ? 回答1: The differences are best described in https://kotlinlang.org/docs/reference/lambdas.html#anonymous-functions: Anonymous functions allow you

问题 In this post, lots of answers are there discussing the this keyword in JavaScript. However, I am still confuse this in the anonymous function as following // MyModule.js 'use strict'; (function(handler) { // export methods handler.B = B; handler.A = A; function A() { console.log(this); console.log('function A is invoked...'); } function B() { console.log(this); console.log('function B is invoked...'); try { A(); this.A(); } catch (err) { console.log('Exception is ' + err); } } })(module

问题 I can call an anonymous function in scale_y_continuous() using function(y) comma(y) , but I cannot call an anonymous function using the ~ convention. Is it possible to use ~ in this situation? library(scales) library(ggplot2) mtcars$model <- rownames(mtcars) # Success ggplot(mtcars[1:3,], aes(x = model, y = wt*2000)) + geom_col() + scale_y_continuous(labels = function(y) comma(y)) # Fail ggplot(mtcars[1:3,], aes(x = model, y = wt*2000)) + geom_col() + scale_y_continuous(labels = ~comma(y))

问题 I have the following function. What it does is, given a Control (most likely a windows form) i want to have all of the controls contained that "obey" the Rules ( a function screening the controls i want ) subscribe to an event (lets say KeyDown). The question is: how do i unsubscribe? Or more importantly, do i need to? Since i will be using this one on the Load event of forms on the form itself will i really need to unsubscribe if the form closes? (after some light reading and a little

问题 I have the following function. What it does is, given a Control (most likely a windows form) i want to have all of the controls contained that "obey" the Rules ( a function screening the controls i want ) subscribe to an event (lets say KeyDown). The question is: how do i unsubscribe? Or more importantly, do i need to? Since i will be using this one on the Load event of forms on the form itself will i really need to unsubscribe if the form closes? (after some light reading and a little

问题 Question If I do this: $checkName = function ($value) use ($min, $max) { function lengthTest($string, $min, $max) { $length = mb_strlen($string, 'UTF-8'); return ($length >= $min) && ($length <= $max); } }; 1) Is it legal PHP? And ... 2) Is the function lengthTest() in the global namespace, or limited to just the $checkName Closure object? Would it be a private member, then? 3) Can lengthTest() be refereced as a callback method for filter_var_array() like this? $filterInstructionsArray [

来源： https://stackoverflow.com/questions/26808668/force-evaluation-of-variables-in-matlab-anonymous-function

来源： https://stackoverflow.com/questions/26808668/force-evaluation-of-variables-in-matlab-anonymous-function

来源： https://stackoverflow.com/questions/26808668/force-evaluation-of-variables-in-matlab-anonymous-function

来源： https://stackoverflow.com/questions/26808668/force-evaluation-of-variables-in-matlab-anonymous-function