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Parse a .py file, read the AST, modify it, then write back the modified source code
...]))])"
Notice the difference in syntax for print statement in Python 2.7 vs. Python 3.5 and the difference in type of AST node in respective trees.
How to modify code using ast:
Now, let's a have a look at an example of modification of python code by ast module. The main tool for modifying AST...
Why is char[] preferred over String for passwords?
... document, the Java Cryptography Architecture guide says this about char[] vs. String passwords (about password-based encryption, but this is more generally about passwords of course):
It would seem logical to collect and store the password in an object
of type java.lang.String. However, here'...
What's the difference between identifying and non-identifying relationships?
..., respectively.
See also my answer to Still Confused About Identifying vs. Non-Identifying Relationships
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How to change webservice url endpoint?
...posed to change it. More importantly, from an environment to another (test vs live), the endpoint url is likely to change.. and nobody wants to tweak the wsdl and recompile in this case.
– Myobis
Dec 16 '13 at 9:56
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Which is better, number(x) or parseFloat(x)?
...s performance difference is browser dependant.
http://jsperf.com/parseint-vs-parsefloat/6
Have a look at these jsPerf results, and make you're call. (it includes +x tests as well)
As noted in @xdazz 's answer, +"" and Number("") return 0 while parseFloat("") returns NaN so Again I would go with p...
Mapping composite keys using EF code first
... more information.
1) https://msdn.microsoft.com/en-us/library/jj591617(v=vs.113).aspx
2) How to add a composite unique key using EF 6 Fluent Api?
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Calling shell functions with xargs
...mments :-(
I was wondering about the focus on
bash -c 'echo_var "$@"' _ {}
vs
bash -c 'echo_var "{}"'
The 1st substitutes the {} as an arg to bash while the 2nd as an arg to the function. The fact that example 1 doesn't expand the $(date) is simply a a side effect.
If you don't want the functions a...
Need for predictable random generator
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community wiki
4 revs, 2 users 98%Ian Terrell
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Why is there no xrange function in Python3?
...x as slow? Well, if I repeat the same tests with 32-bit Python, I get 1.58 vs. 3.12. So my guess is that this is yet another of those cases where 3.x has been optimized for 64-bit performance in ways that hurt 32-bit.
But does it really matter? Check this out, with 3.3.0 64-bit again:
In [86]: %ti...
How to highlight cell if value duplicate in same column for google spreadsheet?
... This allows one to do some pretty advanced formatting when using absolute vs relative cell references.
– asoundmove
Nov 18 '15 at 1:10
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