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SHA512 vs. Blowfish and Bcrypt [closed]
...ons of trials per second using equipment that costs on the order of $1000, testing all passwords up to 8 characters long in a few months.
If however, the digest output is "fed back" thousands of times, it will take hundreds of years to test the same set of passwords on that hardware. Bcrypt achiev...
Label encoding across multiple columns in scikit-learn
... a pipeline e.g. separate fit and transform (fit on train, and then use on test-set --> re-use the learnt dictionary) is this supported with df.apply(LabelEncoder().fit_transform)?
– Georg Heiler
Sep 14 '16 at 9:25
...
Is there a sleep function in JavaScript? [duplicate]
...ly different from how sleep method, if it existed, would behave.
function test1()
{
// let's say JavaScript did have a sleep function..
// sleep for 3 seconds
sleep(3000);
alert('hi');
}
If you run the above function, you will have to wait for 3 seconds (sleep method call is...
How to check whether an array is empty using PHP?
...t; [UserValue02]
ARRAY THREE:
[0] => []
[1] => []
And testing the above arrays with empty() returns the following results:
ARRAY ONE:
$ArrayOne is not empty
ARRAY TWO:
$ArrayTwo is not empty
ARRAY THREE:
$ArrayThree is not empty
An array will always be ...
NUnit isn't running Visual Studio 2010 code
...lt the solution without any errors. I can now use the NUnit GUI app to run tests built for .NET 4.0. I've not done exhaustive testing of this build so there may be problems, but for my purposes it works fine.
Update: It is not necessary to rebuild NUnit. I discovered that if you add the following t...
XMLHttpRequest cannot load file. Cross origin requests are only supported for HTTP
...riting HTML and Javascript in a code editor on your personal computer, and testing the output in your browser, you will probably get error messages about Cross Origin Requests. Your browser will render HTML and run Javascript, jQuery, angularJs in your browser without needing a server set up. But ...
Performance of Java matrix math libraries? [closed]
...range of operations, there are a few clear leaders as can be seen in the latest performance results (October 2013).
If you are working with "large" matrices and can use native libraries, then the clear winner (about 3.5x faster) is MTJ with system optimised netlib. If you need a pure Java solution ...
How to base64 encode image in linux bash / shell
...ntents of the file named 'DSC_0251.JPG', rather than the filename itself.
test="$(cat DSC_0251.JPG | base64)"
However, base64 can read from the file itself:
test=$( base64 DSC_0251.JPG )
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Terminating a script in PowerShell
...to the conflicting information. Ultimately I always have to perform my own tests to figure it out. So this time I will post my findings.
TL;DR Most people will want to use Exit to terminate a running scripts. However, if your script is merely declaring functions to later be used in a shell, then yo...
Finding JavaScript memory leaks with Chrome
I've created a very simple test case that creates a Backbone view, attaches a handler to an event, and instantiates a user-defined class. I believe that by clicking the "Remove" button in this sample, everything will be cleaned up and there should be no memory leaks.
...