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(Built-in) way in JavaScript to check if a string is a valid number

...rns true if the variable does NOT contain a valid number Examples isNaN(123) // false isNaN('123') // false isNaN('1e10000') // false (This translates to Infinity, which is a number) isNaN('foo') // true isNaN('10px') // true Of course, you can negate this if you need...
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What are copy elision and return value optimization?

... when the two objects would have been destroyed without the optimization.123 This elision of copy/move operations, called copy elision, is permitted in the following circumstances (which may be combined to eliminate multiple copies): — in a return statement in a function with a class re...
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Add a prefix to all Flask routes

..._ROOT config value to your prefix: app.config["APPLICATION_ROOT"] = "/abc/123" @app.route("/") def index(): return "The URL for this page is {}".format(url_for("index")) # Will return "The URL for this page is /abc/123/" Setting the APPLICATION_ROOT config value simply limit Flask's session...
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How do I immediately execute an anonymous function in PHP?

... @yes123 nope. still have to use call_user_func – Gordon Oct 30 '12 at 22:41 2 ...
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Func vs. Action vs. Predicate [duplicate]

...lt;int> myAction = new Action<int>(DoSomething); myAction(123); // Prints out "123" // can be also called as myAction.Invoke(123); Func<int, double> myFunc = new Func<int, double>(CalculateSomething); Console.Wr...
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Save modifications in place with awk

...ace.awk include file to invoke the extension properly like so: $ cat file 123 abc 456 def 789 hij $ gawk -i inplace '{print $1}' file $ cat file 123 456 789 The variable INPLACE_SUFFIX can be used to specify the extension for a backup file: $ gawk -i inplace -v INPLACE_SUFFIX=.bak '{print $1}'...
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jquery loop on Json data using $.each

... EDIT: try with this and describes what the result $.get('/Cms/GetPages/123', function(data) { alert(data); }); FOR EDIT 3: this corrects the problem, but not the idea to use "eval", you should see how are the response in '/Cms/GetPages/123'. $.get('/Cms/GetPages/123', function(data) { $....
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How Do I Convert an Integer to a String in Excel VBA?

...he shortest way without declaring the variable is with Type Hints : s$ = 123 ' s = "123" i% = "123" ' i = 123 This will not compile with Option Explicit. The types will not be Variant but String and Integer share ...
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C++使用OLE/COM高速读写EXCEL的源码 - C/C++ - 清泛网 - 专注C/C++及内核技术

...下步骤: 1、导入并封装Excel中的接口 Excel作为OLE/COM库插件,定义好了各类交互的接口,这些接口是跨语言的接口。VC可以通过导入这些接口,并通过接口来对Excel的操作。 由于本文只关心对Excel表格中的数据的读取,主要关注...
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Creating anonymous objects in php

...wered Mar 29 '15 at 14:09 Rizier123Rizier123 55k1616 gold badges7777 silver badges119119 bronze badges ...