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Why fragments, and when to use fragments instead of activities?
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#1 & #2 what are the purposes of using a fragment & what are the
advantages and d...
How do I write a correct micro-benchmark in Java?
...reputable paper on JVMs and micro-benchmarking. A good one is Brian Goetz, 2005. Do not expect too much from micro-benchmarks; they measure only a limited range of JVM performance characteristics.
Rule 1: Always include a warmup phase which runs your test kernel all the way through, enough to trigg...
Difference between res.send and res.json in Express.js
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The methods are identical when an object or array is passed, but res.json() will also convert ...
How many random elements before MD5 produces collisions?
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Probability of just two hashes accidentally colliding is 1/2128 which is 1 in 340 undecillion 282 decillion 366 nonillion 920 octillion 938 septillion 463 sextillion 463 quintillion 374 quadrillion 607 trillion 431 billion 768 million 211 thousand 456.
However if you keep all the ha...
How to export table as CSV with headings on Postgresql?
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Delete a key from a MongoDB document using Mongoose
...collection.update({_id: user._id}, {$unset: {field: 1 }});
Since version 2.0 you can do:
User.update({_id: user._id}, {$unset: {field: 1 }}, callback);
And since version 2.4, if you have an instance of a model already you can do:
doc.field = undefined;
doc.save(callback);
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What is the optimal length for an email address in a database?
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The maximum length of an email address is 254 characters.
Every email address is composed of two parts. The local part that comes before the '@' sign, and the domain part that follows it. In "user@example.com", the local part is "user", and the domain part is "examp...
how to detect search engine bots with php?
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edited Mar 24 '09 at 13:57
answered Mar 24 '09 at 13:37
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How to set up Android emulator proxy settings
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Rotating a point about another point (2D)
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twe4ked
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answered Feb 13 '10 at 23:18
Nils PipenbrinckNils Pipenbrin...