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Purge or recreate a Ruby on Rails database
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Or, rather, it leaves the schema identical to what running all the migrations would have. But the migrations aren't run per se (so if you have migrations which insert data, that won't happen; for this, you should really use a...
Need some clarification about beta/alpha testing on the developer console
The Android developer console has 3 tabs for publishing the app's apk file:
alpha, beta and production, as shown here:
4 An...
Updating address bar with new URL without hash or reloading the page
...dress bar via javascript (the path, not domain) without reloading the page or they really have done this.
4 Answers
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Bash if statement with multiple conditions throws an error
I'm trying to write a script that will check two error flags, and in case one flag (or both) are changed it'll echo-- error happened. My script:
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convert '1' to '0001' in JavaScript [duplicate]
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This is a clever little trick (that I think I've seen on SO before):
var str = "" + 1
var pad = "0000"
var ans = pad.substring(0, pad.length - str.length) + str
JavaScript is more forgiving than some languages if the second argument to substring is negative so it will "overflow correc...
What is the difference between LR, SLR, and LALR parsers?
... exactly the same table-driven machinery.
Fundamentally, the parsing algorithm collects the next input token T, and consults the current state S (and associated lookahead, GOTO, and reduction tables) to decide what to do:
SHIFT: If the current table says to SHIFT on the token T, the pair (S,T) ...
What does glLoadIdentity() do in OpenGL?
...overwhelmed with all of the random functions that I have in my code. They work and I know when to use them, but I don't know why I need them or what they actually do.
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Regular Expression to find a string included between two characters while EXCLUDING the delimiters
...asy done", LOL! :) Regular expressions always give me headache, I tend to forget them as soon as I find the ones that solve my problems. About your solutions: the first works as expected, the second doesn't, it keeps including the brackets. I'm using C#, maybe the RegEx object has its own "flavour"...
Testing whether a value is odd or even
...cided to create simple isEven and isOdd function with a very simple algorithm:
22 Answers
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What exactly is an HTTP Entity?
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An HTTP entity is the majority of an HTTP request or response, consisting of some of the headers and the body, if present. It seems to be the entire request or response without the request or status line (although only certain header fields are cons...