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MySQL: What's the difference between float and double?
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Float has 32 bit (4 bytes) with 8 places accuracy.
Double has 64 bit (8 bytes) with 16 places accuracy.
If you need better accuracy, use Double instead
of Float.
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usr/bin/ld: cannot find -l
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edited Jan 10 '17 at 15:59
Kevin Panko
7,57399 gold badges4646 silver badges5757 bronze badges
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Calling Java from Python
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I have tried Pyjnius/Jnius, JCC, javabridge, Jpype and Py4j.
Py4j is a bit hard to use, as you need to start a gateway, adding another layer of fragility.
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PHP: How to generate a random, unique, alphanumeric string for use in a secret link?
...og($range, 2));
$bytes = (int) ($log / 8) + 1; // length in bytes
$bits = (int) $log + 1; // length in bits
$filter = (int) (1 << $bits) - 1; // set all lower bits to 1
do {
$rnd = hexdec(bin2hex(openssl_random_pseudo_bytes($bytes)));
$rnd = $rnd & $filter; ...
How to add a custom Ribbon tab using VBA?
...the page that explains it on Ron's site is now at
http://www.rondebruin.nl/win/s2/win002.htm
And here is his example on how you enable /disable buttons on the Ribbon
http://www.rondebruin.nl/win/s2/win013.htm
For other xml examples of ribbons please also see
http://msdn.microsoft.com/en-us/library...
How to avoid overflow in expr. A * B - C * D
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Both long long and double are 64 bits. Since double has to allocate some bits for the exponent, it has a smaller range of possible values without loss of precision.
– Jim Garrison
Nov 5 '12 at 19:03
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ArrayBuffer to base64 encoded string
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I tried the non-native implementation from the link and it took 1min and half to convert a 1M size buffer while the loop code above only to...
grunt: command not found when running from terminal
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For windows
npm install -g grunt-cli
npm install load-grunt-tasks
Then run
grunt
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Installing Ruby Gem in Windows
... Ruby Installer. Choose an ?exe file corresponding to your environment (32 bits or 64 bits and working with your version of Ruby).
Follow the installation instructions for DevelopmentKit described at: https://github.com/oneclick/rubyinstaller/wiki/Development-Kit#installation-instructions. Adapt it ...
How to sum up elements of a C++ vector?
...tive approach for speed however.
If you're going to be doing this quite a bit, you may want to consider "sub-classing" your vector so that a sum of elements is maintained separately (not actually sub-classing vector which is iffy due to the lack of a virtual destructor - I'm talking more of a class...