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How to drop into REPL (Read, Eval, Print, Loop) from Python code
... start IPython
You should use IPython, the Cadillac of Python REPLs. See http://ipython.org/ipython-doc/stable/interactive/reference.html#embedding-ipython
From the documentation:
It can also be useful in scientific
computing situations where it is
common to need to do some automatic,
c...
Why is argc not a constant?
...nst, just that it doesn't have to be, but it can be if you want it to be.
http://ideone.com/FKldHF, C example:
main(const int argc, const char* argv[]) { return 0; }
http://ideone.com/m1qc9c, C++ example
main(const int argc) {}
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Swapping column values in MySQL
...thod that uses a temporary variable. Thanks to Antony from the comments of http://beerpla.net/2009/02/17/swapping-column-values-in-mysql/ for the "IS NOT NULL" tweak. Without it, the query works unpredictably. See the table schema at the end of the post. This method doesn't swap the values if one of...
How do I put an already-running process under nohup?
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Issue:
% jobs
[1] running java
[2] suspended vi
% disown %1
See http://www.quantprinciple.com/invest/index.php/docs/tipsandtricks/unix/jobcontrol/
for a more detailed discussion of Unix Job Control.
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What is the maximum depth of the java call stack?
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It depends on the amount of virtual memory allocated to the stack.
http://www.odi.ch/weblog/posting.php?posting=411
You can tune this with the -Xss VM parameter or with the Thread(ThreadGroup, Runnable, String, long) constructor.
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2 column div layout: right column with fixed width, left fluid
...ated one */
width: auto;
overflow: hidden;
}
Example here: http://jsfiddle.net/jackJoe/fxWg7/
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Python, Matplotlib, subplot: How to set the axis range?
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As found in http://www.mofeel.net/582-comp-soft-sys-matlab/54166.aspx
pylab.ylim([0,1000])
Note: The command has to be executed after the plot!
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What is the difference between a route and resource in New Router API?
... 1.11.0 onwards, this.route is only used instead of this.resource. Source: http://guides.emberjs.com/v1.11.0/routing/defining-your-routes/*
Have a look at this post for a detailed explanation.
This is a rough summary of this post (i have modified a bit):
Ever since the change to resource an...
PHP - Merging two arrays into one array (also Remove Duplicates)
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array_unique(array_merge($array1,$array2), SORT_REGULAR);
http://se2.php.net/manual/en/function.array-unique.php
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Overwrite or override
...erride and it's not language-specific as you can also read from wikipedia: http://en.wikipedia.org/wiki/Method_overriding
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