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How to use Morgan logger?

...mote ip, request method, http version, response status, user agent etc. It allows you to modify the log using tokens or add color to them by defining 'dev' or even logging out to an output stream, like a file. For the purpose we thought we can use it, as in this case, we still have to use: console...
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Getting a better understanding of callback functions in JavaScript

I understand passing in a function to another function as a callback and having it execute, but I'm not understanding the best implementation to do that. I'm looking for a very basic example, like this: ...
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Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?

... in the branch prediction table moving the branch eliminated the alias and allowed the branch to be predicted correctly Your Core2 doesn't keep a separate history record for each conditional jump. Instead it keeps a shared history of all conditional jumps. One disadvantage of global branch predic...
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Mercurial (hg) commit only certain files

...of hg having auto-add whenever I try to commit a change it wants to commit all files. But I don't want that because certain files are not "ready" yet. ...
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Which is more efficient, a for-each loop, or an iterator?

... If you are just wandering over the collection to read all of the values, then there is no difference between using an iterator or the new for loop syntax, as the new syntax just uses the iterator underwater. If however, you mean by loop the old "c-style" loop: for(int i=0; i&l...
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How to hash some string with sha256 in Java?

... SHA-256 isn't an "encoding" - it's a one-way hash. You'd basically convert the string into bytes (e.g. using text.getBytes(StandardCharsets.UTF_8)) and then hash the bytes. Note that the result of the hash would also be arbitrary binary data, and if you want to represent that in a strin...
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What's the difference between IEquatable and just overriding Object.Equals()?

...t you avoid a cast from System.Object which can make a difference if it's called frequently. As noted on Jared Parson's blog though, you still must implement the Object overrides. share | improve t...
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What are 'get' and 'set' in Swift?

... That's actually explained right before the code: In addition to simple properties that are stored, properties can have a getter and a setter. class EquilateralTriangle: NamedShape { ... When some other class wants to get that pe...
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Sequence contains no matching element

...g about the others anyway. On the other hand, it looks like you might actually be better off with a join here in the first place. If you didn't care that it would do all matches (rather than just the first) you could use: var query = from target in _lstAcl.Documents join source in _dsA...
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How to make a countdown timer in Android?

...? I tried getting the value from an EditText but it didn't seem to work at all. – edwoollard Aug 3 '13 at 9:41 ...