call

JavaScript call() and Prototype - Slice Function

由 此生再无相见时 提交于 2019-12-10 07:22:37
问题 I'm reading the MDN Article on slice in JavaScript. I understand everything except the 2nd example in the section titled Array-Like Objects . It says we can simplify the first example by making slice our own function as so: var unboundSlice = Array.prototype.slice; var slice = Function.prototype.call.bind(unboundSlice); function list() { return slice(arguments); } var list1 = list(1, 2, 3); // [1, 2, 3] What I don't understand is how call can come right after prototype on the second line. I

【汇编】C++ 函数调用之——有参无返回调用（传值）

由 こ雲淡風輕ζ 提交于 2019-12-10 04:01:09
C++函数有参调用有几种传参方式： 一.传值 二.传指针（地址） 三.传引用 其中参数可被const修饰，也可以有默认值。下面分情况讨论： 为了简洁，省略main函数的汇编码而直接给出func函数的汇编码。 一.传值调用 有源代码： void func(int a,char b){ int c; c=a+b; } int main(int argc,char *argv[]) { //call func func(10,'a'); return 0; } 下面看看汇编码： 调用发生时： //call func func(10,'a'); //进行参数压栈操作，首先是'a'压入栈，然后是10压栈，然后call跳转表，再由调转表call函数 00F1141E push 61h 00F11420 push 0Ah 00F11422 call 00F1113B //函数调用完成后，栈减小8字节，两个dword，因为CPU对栈的操作都是双字操作，这里两个参数就是两个双字 00F11427 add esp,8 具体内存中的表现是这样的（先让func把栈初始化）： 显然不在func的stack内，注意两个参数前面还有两个DWORD， 一个是00f1 1427,另一个是00dd f794；这两个DWORD的产生应该是在PUSH两个参数之后， 又有的两个PUSH， 显然，第一个PUSH 00f1

Start an Activity from another Activity on Xamarin Android

由 自闭症网瘾萝莉.ら 提交于 2019-12-10 03:48:59
问题 I found this java code to create a generic method to start any activity from other activity. public void gotoActivity(Class activityClassReference) { Intent i = new Intent(this,activityClassReference); startActivity(i); } How can I convert that code to c# for xamarin-Android? Thanks in advance. 回答1: You can write: public void GoToActivity(Type myActivity) { StartActivity(myActivity); } and call it like: GoToActivity(typeof(ActivityType)); or just write: StartActivity(typeof(ActivityType));

Recursive function: Call php function itself

由 岁酱吖の 提交于 2019-12-10 01:00:43
问题 I just want to make sure I do it right and this will not create any conficts. I have a function which calls itself and need your approval if it's OK or not to do so? <?php function determine($the_array){ foreach ($the_array as $key => $value) { switch ($key) { case 'in': echo $value; break; case 'out': echo $value; break; case 'level': echo '<ul>'; determine($value); echo '</ul>'; break; } } } This is the array: $the_array = array( 'in' => '<li>Simple IN</li>', 'out' => '<li>Simple OUT</li>',

How to list all calls of a function at runtime?

由 杀马特。学长 韩版系。学妹 提交于 2019-12-09 21:51:26
问题 Is there any way to list (show in VS, write to file) all callers (objects, functions) of a function while the program is running? Possibly using the debugger? I need to record all calls (including callers) of a function from the launch of the program to its termination. A simple scan of the source code or the binary does not do the job because the program could operate as a server which receives requests to call the desired function. If Visual Studio does not provide this feature, are there

expression vs call

由 本小妞迷上赌 提交于 2019-12-09 18:58:37
问题 What is the difference between an expression and a call? For instance: func <- expression(2*x*y + x^2) funcDx <- D(func, 'x') Then: > class(func) [1] "expression" > class(funcDx) [1] "call" Calling eval with envir list works on both of them. But Im curious what is the difference between the two class, and under what circumstances should I use expression or call. 回答1: You should use expression when you want its capacity to hold more than one expression or call. It really returns an "expression

Different ways to call methods in ABAP

由 做~自己de王妃 提交于 2019-12-09 17:33:21
问题 Sorry for this basic ABAP question. What are the different ways to call methods in ABAP? And what are their "official" names? I've heard of perform, method call, and internal/inline method call. Perform uses the PERFORM keyword and method call the CALL METHOD syntax, I guess. But what is an "internal" or "inline method call"? 回答1: These are the possibilities of an inline method call. If you are calling so called functional method which has only IMPORTING parameters and optionally one RETURN

javascript setTimeout call error

由 ⅰ亾dé卋堺 提交于 2019-12-09 11:39:48
问题 I want to invoke the window.setTimeot function with my custom scope so I use the call method, but there is something wrong. function foo() { this.bar = function() { console.log("keep going"); window.setTimeout.call(this,this.bar,100); } this.bar(); } new foo; under Firefox this prints to the console only 1 line and then nothing, and under google chrome it throws a TypeError. What is the problem in my code? 回答1: Using call does not help here: it calls setTimeout with your this object, but the

Python, subprocess, call(), check_call and returncode to find if a command exists

由 拥有回忆 提交于 2019-12-09 08:30:13
问题 I've figured out how to use call() to get my python script to run a command: import subprocess mycommandline = ['lumberjack', '-sleep all night', '-work all day'] subprocess.call(mycommandline) This works but there's a problem, what if users don't have lumberjack in their command path? It would work if lumberjack was put in the same directory as the python script, but how does the script know it should look for lumberjack? I figured if there was a command-not-found error then lumberjack

Navigating Java call stack in Eclipse

由 ♀尐吖头ヾ 提交于 2019-12-09 07:33:22
问题 In debuggers like GDB, when you stop at a breakpoint, you can easily move up the call stack and examine the relevant source and stack frame data. How do you do this in Eclipse? 回答1: In the "debug perspective", show the view named "debug". For each thread that is currently halted, this view shows the full call stack. Clicking on one element of this stack switches the editor view to display the corresponding class, and "variables" view will show variables of this stack element. 回答2: Note that
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