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How to express infinity in Ruby?

... Dorian 17.4k66 gold badges101101 silver badges102102 bronze badges answered Apr 25 '11 at 12:31 MattMatt ...
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Padding is invalid and cannot be removed?

...ypher. It encrypts data in 128 bit (16 character) blocks. Cryptographic padding is used to make sure that the last block of the message is always the correct size. Your decryption method is expecting whatever its default padding is, and is not finding it. As @NetSquirrel says, you need to explic...
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boolean in an if statement

...values for booleanValue and how you want the code to work. If you know in advance that it's only ever going to have a true or false value, then comparing it explicitly with if (booleanValue === true) is just extra code and unnecessary and if (booleanValue) is more compact and arguably cleane...
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Is it possible to make the -init method private in Objective-C?

...hod of creating singletons. It's virtually always unnecessary and is just adding complication for no real significant advantage. Instead, just write your code such that your +sharedWhatever method is how you access a singleton, and document that as the way to get the singleton instance in your hea...
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How to print out the method name and line number and conditionally disable NSLog?

... diederikhdiederikh 24.9k44 gold badges3333 silver badges4848 bronze badges ...
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Can someone explain in simple terms to me what a directed acyclic graph is?

... smartcavemansmartcaveman 36.7k2424 gold badges113113 silver badges201201 bronze badges ...
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How to directly initialize a HashMap (in a literal way)?

...Yes, this is possible now. In Java 9 a couple of factory methods have been added that simplify the creation of maps : // this works for up to 10 elements: Map<String, String> test1 = Map.of( "a", "b", "c", "d" ); // this works for any number of elements: import static java.util.Map.e...
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How to check if a string is a valid hex color representation?

... [0-9A-F]{6} is replaced with ([0-9A-F]{3}){1,2} This means that instead of matching exactly 6 characters, it will match exactly 3 characters, but 1 or 2 times. Allowing ABC and AABBCC, but not ABCD share | ...
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How to copy a row and insert in same table with a autoincrement field in MySQL?

... mu is too shortmu is too short 385k6262 gold badges757757 silver badges727727 bronze badges ...
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Hashing a string with Sha256

... Encoding.Unicode is Microsoft's misleading name for UTF-16 (a double-wide encoding, used in the Windows world for historical reasons but not used by anyone else). http://msdn.microsoft.com/en-us/library/system.text.encoding.unicode.aspx If you inspect your byte...