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How much size “Null” value takes in SQL Server
...able length.
The reason for the discrepancies that you have observed in information from other sources:
The start of the first article is a bit misleading. The article is not talking about the cost of storing a NULL value, but the cost of having the ability to store a NULL (i.e the cost of maki...
HSL to RGB color conversion
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Ruby equivalent: rubydoc.info/gems/color/1.8/Color/RGB e.g. Color::HSL.new(40,50,60).to_rgb
– xxjjnn
Apr 18 '16 at 11:40
1
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Android Spanned, SpannedString, Spannable, SpannableString and CharSequence
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Since the official docs are silent, How did you get these info from? Manual source browsing the hardcore way?
– Pacerier
Nov 19 '14 at 5:15
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When to use static classes in C# [duplicate]
...ding whether to make a class static or non-static you need to look at what information you are trying to represent. This entails a more 'bottom-up' style of programming where you focus on the data you are representing first. Is the class you are writing a real-world object like a rock, or a chair? T...
PHP: How to generate a random, unique, alphanumeric string for use in a secret link?
...ng similar to:
string(40) "5fe69c95ed70a9869d9f9af7d8400a6673bb9ce9"
More info: http://php.net/manual/en/function.random-bytes.php
PHP 5 (outdated)
I was just looking into how to solve this same problem, but I also want my function to create a token that can be used for password retrieval as well. ...
What character encoding should I use for a HTTP header?
..." HTML special-character (✰)(see http://html5boilerplate.com/ for more info) for a Server HTTP-header and am wondering if it is "allowed" per spec.
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How to exclude certain directories/files from git grep search
...binary by creating an attributes file in your repository, e.g.
$ cat .git/info/attributes
directory/to/ignore/*.* binary
directory/to/ignore/*/*.* binary
another_directory/to/also/ignore/*.* binary
Matches in binary files are listed without the including line, e.g.
$ git grep "bar"
Binary file ...
Why is XOR the default way to combine hashes?
...it to the next bit over when both values are 1. This means it erases less information.
So hash(a) + hash(b) is better than hash(a) xor hash(b) in that if a==b, the result is hash(a)<<1 instead of 0.
This remains symmetric; so the "bad" and "dab" getting the same result remains a problem. W...
Specifying and saving a figure with exact size in pixels
...It was a jpg image, so there was no way for me to get the dpi from PIL img.info['dpi'], so the accepted solution did not work for me. But after some tinkering I figured out way to save the figure with the same size as the original.
I am adding the following solution here thinking that it will help s...
What is the best way to ensure only one instance of a Bash script is running? [duplicate]
...er the hood flock uses simply flock(2) syscall and it doesn't provide such information nor it even should. If you want to unreliably check, whether there is a lock present (or lack thereof), i.e. without holding it, then you have to try to acquire it in a non-blocking way (exlock_now) and release it...