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How to use glOrtho() in OpenGL?

... and z are in [-1, +1] ignore the z component and take only x and y, which now can be put into a 2D screen With glOrtho, z is ignored, so you might as well always use 0. One reason you might want to use z != 0 is to make sprites hide the background with the depth buffer. Deprecation glOrtho is ...
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Remove the last character in a string in T-SQL?

... substring syntax is as follows: SUBSTRING ( expression ,start , length ). Now, both queries return the same because the numbering is 1 based, meaning that the first character in the expression is 1. If start is less than 1, the returned expression will begin at the first character that is specified...
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What's “P=NP?”, and why is it such a famous question? [closed]

...ix multiplication, the basic operation is multiplication of two numbers. Now the question is, what does deterministic vs. non-deterministic mean? There is an abstract computational model, an imaginary computer called a Turing machine (TM). This machine has a finite number of states, and an infin...
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Big O, how do you calculate/approximate it?

Most people with a degree in CS will certainly know what Big O stands for . It helps us to measure how well an algorithm scales. ...
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Downloading Java JDK on Linux via wget is shown license page instead

..._linux-x64_bin.tar.gz UPDATED FOR JDK 9 it looks like you can download it now directly from java.net without sending a header wget http://download.java.net/java/GA/jdk9/9/binaries/jdk-9+181_linux-x64_bin.tar.gz UPDATED FOR JDK 8u191 TAR GZ: wget --no-cookies --no-check-certificate --header "Cookie...
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Generate 'n' unique random numbers within a range [duplicate]

I know how to generate a random number within a range in Python. 4 Answers 4 ...
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Find if variable is divisible by 2

...iot for asking the question...which (for all the others who don't already know) is a big deal to new jQuery/Javascript developers. – sadmicrowave May 13 '10 at 11:54 6 ...
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What is a plain English explanation of “Big O” notation?

... then initials or first name, possibly address and then telephone numbers. Now if you were instructing a computer to look up the phone number for "John Smith" in a telephone book that contains 1,000,000 names, what would you do? Ignoring the fact that you could guess how far in the S's started (let...
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How to replace a string in a SQL Server Table Column

...ave a table ( SQL Sever ) which references paths ( UNC or otherwise), but now the path is going to change. 10 Answers ...
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Sequelize Unknown column '*.createdAt' in 'field list'

I'm getting a Unknown column 'userDetails.createdAt' in 'field list' When trying to fetch with association. 6 Answers ...