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Why does my application spend 24% of its life doing a null check?
I've got a performance critical binary decision tree, and I'd like to focus this question on a single line of code. The code for the binary tree iterator is below with the results from running performance analysis against it.
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Difference between rake db:migrate db:reset and db:schema:load
The difference between rake db:migrate and rake db:reset is pretty clear in my head. The thing which I don't understand is how rake db:schema:load different from the former two.
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classical inheritance vs prototypal inheritance in javascript
I have googled so many links and can't get good idea about the difference between classical inheritance and prototypal inheritance?
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Is git's semi-secret empty tree object reliable, and why is there not a symbolic name for it?
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Why should I use core.autocrlf=true in Git?
I have a Git repository that is accessed from both Windows and OS X, and that I know already contains some files with CRLF line-endings. As far as I can tell, there are two ways to deal with this:
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Transaction isolation levels relation with locks on table
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How to use cURL to get jSON data and decode the data?
So I have a link that returns a jSON object, and I need to have it decoded and put into variables in PHP.
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How can I configure my makefile for debug and release builds?
I have the following makefile for my project, and I'd like to configure it for release and debug builds. In my code, I have lots of #ifdef DEBUG macros in place, so it's simply a matter of setting this macro and adding the -g3 -gdwarf2 flags to the compilers. How can I do this?
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What is the purpose of setting a key in data.table?
I am using data.table and there are many functions which require me to set a key (e.g. X[Y] ). As such, I wish to understand what a key does in order to properly set keys in my data tables.
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IE10 renders in IE7 mode. How to force Standards mode?
On microsoft's site they claim that simple doctype declaration is enough. But even a document as short as this falls back to IE7 mode:
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