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Ternary operator (?:) in Bash
... 20 -- this can also be a result of an expression.
This approach is technically called "Parameter Expansion".
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Why does base64 encoding require padding if the input length is not divisible by 3?
... the protocol used padding, there would be no need to transmit a length at all. The data could be encoded as it came in from the camera, each chunk terminated with padding, and the receiver would be able to decode the stream correctly.
Obviously that's a very contrived example, but perhaps it illus...
PDO's query vs execute
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query runs a standard SQL statement and requires you to properly escape all data to avoid SQL Injections and other issues.
execute runs a prepared statement which allows you to bind parameters to avoid the need to escape or quote the parameters. execute will also perform better if you are repeat...
Eclipse error: “The import XXX cannot be resolved”
...ean also worked for me. What exactly happens (everything just went bonkers all of a sudden) and how does Clean help?
– Sabre Runner
Sep 22 '13 at 12:31
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character showing up in files. How to remove them?
...for removing <fffe> character at the beginning of a line, to replace all <fffe> characters in a line: 's/\x{fffe}//g'.
– Diego Pino
Dec 26 '11 at 9:21
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What's a “static method” in C#?
... 1; }
public static int StaticMethod() { return 42; }
}
In order to call InstanceMethod, you need an instance of the class:
SomeClass instance = new SomeClass();
instance.InstanceMethod(); //Fine
instance.StaticMethod(); //Won't compile
SomeClass.InstanceMethod(); //Won't compile
Some...
How exactly does tail recursion work?
...nt one but without explicit recursion (that is, without explicit function calls). If you change the logic into something non-equivalent, you may indeed make the function loop forever in some or all cases.
– Alexey Frunze
Mar 20 '13 at 9:30
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Why does CSS not support negative padding?
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sometimes it's not practical to edit the CSS of all children of a container. You might have generic CSS that applies to these elements across the document, and you don't want to change it for the contents of a particular container, for example.
– Rolf...
Is It Possible to NSLog C Structs (Like CGRect or CGPoint)?
... With AppKit on OS X you would need to convert to an NSPoint and then call NSStringFromPoint. For example: NSStringFromPoint(NSPointFromCGPoint(point))
– Alex
Aug 22 '12 at 17:56
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How can I trim beginning and ending double quotes from a string?
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You can use String#replaceAll() with a pattern of ^\"|\"$ for this.
E.g.
string = string.replaceAll("^\"|\"$", "");
To learn more about regular expressions, have al ook at http://regular-expression.info.
That said, this smells a bit like that you...