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What are the most interesting equivalences arising from the Curry-Howard Isomorphism?
...ic" http://www.cs.cmu.edu/~fp/papers/mscs00.pdf - this is a great place to start because it starts from first principles and much of it is aimed to be accessible to non-logicians/language theorists. (I'm the second author though, so I'm biased.)
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Regexp Java for password validation
...-Z])(?=.*[@#$%^&+=])(?=\S+$).{8,}$
Explanation:
^ # start-of-string
(?=.*[0-9]) # a digit must occur at least once
(?=.*[a-z]) # a lower case letter must occur at least once
(?=.*[A-Z]) # an upper case letter must occur at least once
(?=.*[@#$%^&+=]) # a...
Disable IPython Exit Confirmation
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just type Exit, with capital E.
Alternatively, start IPython with:
$ ipython -noconfirm_exit
Or for newer versions of IPython:
$ ipython --no-confirm-exit
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i...
What is a typedef enum in Objective-C?
... specific values were specified, they get assigned to consecutive integers starting with 0, so kCircle is 0, kRectangle is 1, and kOblateSpheroid is 2.
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Excluding files/directories from Gulp task
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On minimatch documentation, they point out the following:
if the pattern starts with a ! character, then it is negated.
And that is why using ! symbol will exclude files / directories from a gulp task
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how to change default python version?
...ut perhaps you could do alias py=python3
If you are confused about how to start the latest version of python, it is at least the case on Linux that python3 leaves your python2 installation intact (due to the above compatibility reasons); thus you can start python3 with the python3 command.
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Copy the entire contents of a directory in C#
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Try this:
Process proc = new Process();
proc.StartInfo.UseShellExecute = true;
proc.StartInfo.FileName = Path.Combine(Environment.SystemDirectory, "xcopy.exe");
proc.StartInfo.Arguments = @"C:\source C:\destination /E /I";
proc.Start();
Your xcopy arguments may vary b...
What is the max size of localStorage values?
...ment.getElementById('result');
result.textContent = 'Test running…';
//Start test
//Defer running so DOM can be updated with "test running" message
setTimeout(function () {
//Variables
var low = 0,
high = 2e9,
half;
//Two billion may be a little low as a starting po...
How to change context root of a dynamic web project in Eclipse?
...ht-clicking your server (in the Servers view) and choosing Clean. Then you start (or restart it). Most of the other answers here suggest you do things that in effect accomplish this.
The file that's changing is workspace/.metadata/.plugins/org.eclipse.wst.server.core/publish/publish.dat unless, that...
AsyncTask Android example
... here
I have created a simple example for using AsyncTask of Android. It starts with onPreExecute(), doInBackground(), publishProgress() and finally onProgressUpdate().
In this, doInBackground() works as a background thread, while other works in the UI Thread. You can't access an UI element in do...