curly-braces

问题 This question already has an answer here : Closed 8 years ago . Possible Duplicate: Escape curly brace '{' in String.Format c# has a String.Format method that allows you to format a string but inserting params with the tokens {0} {1} I am trying to create a simple json string which requires curly brackets to be in the string, and so it is breaking the formatter String.Format("{ foo:'{0}', bar:'{1}' }", foo, bar); Adding an escape before the braces did not help Throws a exception saying my

问题 I'm currently reading 'Javascript Web Applications' (O'Reilly, Alex MacCaw) and very early on there's a code snippet which might appear to execute a JS function, within an HTML document, yet it is not enclosed by <script> tags: // template.html <div> <script> function doSomething(aParam) { /* do stuff ... */ }; </script> ${ doSomething(this.someX) } </div> Please could someone kindly explain the dollar-sign-curly-brace notation ? I'm currently learning JS and I haven't seen this before, so I

问题 In Visual Studio while designing MVC views (in .aspx or .ascx files) I often use if statements. When I auto-format (Ctrl-K,D), VS wraps the braces in this really ugly and hard to read way: <% if (Model.UserIsAuthenticated) { %> (some HTML goes here...) <% } %> Is there any way to make Visual Studio auto-format like this instead: <% if (Model.UserIsAuthenticated) { %> (some HTML goes here...) <% } %> Or is there a better way to do this? I don't want to use Razor quite yet, but it looks like it

问题 Note: My question is based after checking this and the answers to it. In some bigger methods, there are pieces of code that you only want to be alive for a certain period of time. An example: 1) I have a big method that sets my UI: UILabel's size, colour, positioning, UIView's gesture recognisers, etc. Knowing the above, does it makes sense to do something like this: - (void)setUI { //setting other UI elements { // Add the Swipe Gesture to the swipeUpView UISwipeGestureRecognizer

问题 I know {} are used to separate entities such as functions, classes and conditional branching, but what other use would they have here? #import <stdio.h> int main(void) { {{{ printf("main\n"); }}} return 0; } EDIT: I found that it may be useful primarily for information hiding, along with nested functions. From the answers below it would seem they can be used as a marker during debugging and be removed in the release, but that this should not be endorsed. 回答1: Enclosing a code in braces { }

问题 This question already has answers here : Closed 10 years ago . Possible Duplicates: Formatting of if Statements Is there a best coding style for identations (same line, next line)? Best way to code stackoverflow style 'questions' / 'tags' rollover buttons public void Method { } or public void Method { } Besides personal preference is there any benefit of one style over another? I used to swear by the second method though now use the first style for work and personal projects. By readability I

问题 This string is part a JSON object/file: "Mask" : "{0}(CASE WHEN {1} = {2} THEN {3} ELSE 0 END) {4}" Will JSON recognize that as part of standard JSON notation or do I need to escape those curly braces s somehow? If so, how does one escape curly braces in JSON? 回答1: No . Curly braces do not have to be escaped in JSON. 回答2: No, curly braces do not have to be escaped in JSON strings. JSON is defined in RFC 7159. The Section 7: Strings lists the string characters that must be escaped: All Unicode

问题 I use curly braces with all of my switch case statements in C/Objective-C/C++ I had not, until a few moments ago, considered whether including the break; statement inside the braces was good or bad practice. I suspect that it doesn't matter, but I figure it is still worth asking. switch (foo) { case 1: { // stuff break; } default: { break; } } vs switch (foo) { case 1: { // stuff } break; default: { // stuff } break; } 回答1: Short answer: it doesn't matter. 回答2: Just a give a slightly more

问题 I was going through a codebase and came across a line I had a question about. It's something I haven't seen before and I was wondering if someone could explain it for me. Here's the code: $variableName = $array[1]; $variableName{0} = strtolower($variableName{0}); $this->property = $variableName; What are the curly braces being used for? I've used curly braces to define variables as variable names before, but is this the same thing? I can't seem to find any resources online that explain it,

问题 In Java the following is completely valid: if (x == null) Y(); else Z(); I personally don't like it at all. I like all my IF statements to have braces: if (x == null) { Y(); } else { Z(); } The eclipse formatter is wonderful and can beautify my code in many other ways. Is there a way to have it add the braces to IF statements? 回答1: Under "Preferences": Java > Editor > Save Actions 1) Check "Additional actions" 2) Click "Configure…" 3) Go to the "Code Style" tab 4) Check "Use blocks in if