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How do I create a list of random numbers without duplicates?

I tried using random.randint(0, 100) , but some numbers were the same. Is there a method/module to create a list unique random numbers? ...
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C++: Rounding up to the nearest multiple of a number

...ger math. int roundUp(int numToRound, int multiple) { if (multiple == 0) return numToRound; int remainder = numToRound % multiple; if (remainder == 0) return numToRound; return numToRound + multiple - remainder; } Edit: Here's a version that works with negative n...
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CSS background opacity with rgba not working in IE 8

... Daniel Mendel 8,35111 gold badge2020 silver badges3737 bronze badges answered Oct 20 '10 at 7:44 MatTheCatMatTheCat ...
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Appropriate datatype for holding percent values?

What is the best datatype for holding percent values ranging from 0.00% to 100.00%? 5 Answers ...
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How do you get the width and height of a multi-dimensional array?

... answered Nov 23 '10 at 19:52 Reed CopseyReed Copsey 509k6868 gold badges10671067 silver badges13241324 bronze badges ...
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Getting the first character of a string with $str[0]

I want to get the first letter of a string and I've noticed that $str[0] works great. I am just not sure whether this is 'good practice', as that notation is generally used with arrays. This feature doesn't seem to be very well documented so I'm turning to you guys to tell me if it's all right –...
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Does opacity:0 have exactly the same effect as visibility:hidden

... in the taborder collapse events taborder opacity: 0 No Yes Yes visibility: hidden No No No visibility: collapse Yes* No No display: none Yes No No * Yes inside a table element, otherwise No. ...
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Using .NET, how can you find the mime type of a file based on the file signature not the extension

... answered Sep 12 '08 at 9:44 Steve MorganSteve Morgan 12.4k22 gold badges3838 silver badges4949 bronze badges ...
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Comparing numbers in Bash

... answered Sep 7 '13 at 0:48 jordanmjordanm 25k44 gold badges5252 silver badges6363 bronze badges ...
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How do you make a HTTP request with C++?

...s of a page (an API) and check the contents to see if it contains a 1 or a 0. Is it also possible to download the contents into a string? ...