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What is the meaning of prepended double colon “::”?
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This ensures that resolution occurs from the global namespace, instead of starting at the namespace you're currently in. For instance, if you had two different classes called Configuration as such:
class Configuration; // class 1, in global namespace
namespace...
How to remove single character from a String
For accessing individual characters of a String in Java, we have String.charAt(2) . Is there any inbuilt function to remove an individual character of a String in java?
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Getting the location from an IP address [duplicate]
...ant to retrieve information like the city, state, and country of a visitor from their IP address, so that I can customize my web page according to their location. Is there a good and reliable way to do this in PHP? I am using JavaScript for client-side scripting, PHP for server-side scripting, and M...
Should a return statement be inside or outside a lock?
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You can't return from a try block; it must end with a ".leave" op-code. So the CIL emitted should be the same in either case.
– Greg Beech
Nov 5 '08 at 21:25
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What is the best way to stop people hacking the PHP-based highscore table of a Flash game
...s computer. You're SOL. There is nothing you can do to prevent an attacker from forging high scores:
Flash is even easier to reverse engineer than you might think it is, since the bytecodes are well documented and describe a high-level language (Actionscript) --- when you publish a Flash game, you...
How are GCC and g++ bootstrapped?
...mplemented in C++ but translated by what Stroustrup calls a "preprocessor" from C++ to C; not a full compiler by his definition, but still C++ was bootstrapped in C.
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Prevent row names to be written to file when using write.csv
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write.csv(t, "t.csv", row.names=FALSE)
From ?write.csv:
row.names: either a logical value indicating whether the row names of
‘x’ are to be written along with ‘x’, or a character vector
of row names to be written.
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Show pop-ups the most elegant way
...'s funny because I'm learning Angular myself and was watching some video's from their channel on Youtube.
The speaker mentions your exact problem in this video https://www.youtube.com/watch?v=ZhfUv0spHCY#t=1681 around the 28:30 minute mark.
It comes down to placing that particular piece of code in ...
How would one write object-oriented code in C? [closed]
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You can get it directly from the author's site: cs.rit.edu/~ats/books/ooc.pdf other papers from same author: cs.rit.edu/~ats/books/index.html
– pakman
Jul 28 '12 at 0:33
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What is an “unwrapped value” in Swift?
...ar cantBeNil : Int = 4
cantBeNil = nil // can't do this
To get the value from your variable if it is optional, you have to unwrap it. This just means putting an exclamation point at the end.
var canBeNil : Int? = 4
println(canBeNil!)
Your code should look like this:
let optionalSquare: Square?...