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(Built-in) way in JavaScript to check if a string is a valid number
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A very important note about parseInt is that it will allow you to specify a radix for converting the string to an int. This is a big gotcha as it tries to guess a radix for you if you don't supply it. So, for example: parseInt("17") results in 17 (decimal, 10), but parseInt("...
Initializing multiple variables to the same value in Java
...n, thirdPerson;
firstPerson = secondPerson = thirdPerson = new Person();
All the variables would be pointing to the same instance. Probably what you would need in that case is:
Person firstPerson = new Person();
Person secondPerson = new Person();
Person thirdPerson = new Person();
Or better ye...
Using emit vs calling a signal as if it's a regular function in Qt
...e this:
#ifndef QT_NO_EMIT
# define emit
#endif
(The define guard is to allow you to use Qt with other frameworks that have colliding names via the no_keywords QMake config option.)
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File path to resource in our war/WEB-INF folder?
...ntext = getContext();
String fullPath = context.getRealPath("/WEB-INF/test/foo.txt");
http://tomcat.apache.org/tomcat-5.5-doc/servletapi/javax/servlet/ServletContext.html#getRealPath(java.lang.String)
That will get you the full system path to the resource you are looking for. However, that won't...
ASP.NET MVC Ajax Error handling
How do I handle exceptions thrown in a controller when jquery ajax calls an action?
6 Answers
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Remove all whitespace in a string
I want to eliminate all the whitespace from a string, on both ends, and in between words.
10 Answers
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#ifdef vs #if - which is better/safer as a method for enabling/disabling compilation of particular s
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My initial reaction was #ifdef, of course, but I think #if actually has some significant advantages for this - here's why:
First, you can use DEBUG_ENABLED in preprocessor and compiled tests. Example - Often, I want longer timeouts when debug is enabled, so using #if, I can write this
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How to drop columns by name in a data frame
I have a large data set and I would like to read specific columns or drop all the others.
11 Answers
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When to use Vanilla JavaScript vs. jQuery?
... there are certain practices using javascript, instead of jQuery, that actually enable you to write less and do ... well the same amount. And may also yield performance benefits.
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jQuery how to bind onclick event to dynamically added HTML element [duplicate]
I want to bind an onclick event to an element I insert dynamically with jQuery
9 Answers
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