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Difference between freeze and seal
I just heard about the JavaScript methods freeze and seal , which can be used to make any Object immutable.
8 Answers
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How to detect when cancel is clicked on file input?
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While not a direct solution, and also bad in that it only (as far as I've tested) works with onfocus (requiring a pretty limiting event blocking) you can achieve it with the following:
document.body.onfocus = function(){ /*rock it*/ }
What's nice abou...
How to concatenate two numbers in javascript?
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Ok so, suposing the values 5 and 6 are in two variables: var1 = 5; var2 = 6; will it still work
– Heidi
Nov 12 '09 at 17:03
4
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How to “return an object” in C++?
...t of the problem (I know the difference between having things on the stack and putting them on the heap).
8 Answers
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What is a callback function?
...allback function is a function which is:
accessible by another function, and
is invoked after the first function if that first function completes
A nice way of imagining how a callback function works is that it is a function that is "called at the back" of the function it is passed into.
Maybe ...
Draw text in OpenGL ES
I'm currently developing a small OpenGL game for the Android platform and I wonder if there's an easy way to render text on top of the rendered frame (like a HUD with the player´s score etc). The text would need to use a custom font also.
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How to clear the canvas for redrawing
After experimenting with composite operations and drawing images on the canvas I'm now trying to remove images and compositing. How do I do this?
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Versioning SQL Server database
....html. I choose not to put schema dumps in under version control as alumb and others suggest because I want an easy way to upgrade my production database.
For a web application where I'll have a single production database instance, I use two techniques:
Database Upgrade Scripts
A sequence databa...
Best introduction to C++ template metaprogramming? [closed]
...tatic Metaprogramming in C++" from Generative Programming, Methods, Tools, and Applications by Krzysztof Czarnecki and Ulrich W. Eisenecker, ISBN-13: 9780201309775; and chapter 17, "Metaprograms" of C++ Templates: The Complete Guide by David Vandevoorder and Nicolai M. Josuttis, ISBN-13: 97802017348...
How to convert existing non-empty directory into a Git working directory and push files to a remote
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Given you've set up a git daemon on <url> and an empty repository:
cd <localdir>
git init
git add .
git commit -m 'message'
git remote add origin <url>
git push -u origin master
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