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I have a list of variables:
variables = ['VariableA', 'VariableB','VariableC']
which I'm going to search for, line by line
ifile = open("temp.txt",'r')
d = {}
match = zeros(len(variables))
for line in ifile:
emptyCells=0
for i in range(len(variables)):
regex = r'('+variables[i]+r')[:|=|\(](-…
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I was looking at the regular expression for validating various data types from the (OWASP Regex Repository).
One of the regular expressions in there is called safetext and looks like:
^[a-zA-Z0-9\s.\-]+$
My first question is:
Is this regular expression correct?
complementary question
If this…
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I am writing a tool to help students learn regular expressions. I will probably be writing it in Java.
The idea is this: the student types in a regular expression and the tool shows which parts of a text will get matched by the regex. Simple enough.
But I want to support several different regex…
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I'm writing a piece of client-side javascript code that takes a function and finds the derivative of it, however, the regex that's supposed to match with the power rule fails to work in the context of the javascript program, even though it sucessfully matches when it's used with an independent regex…
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I need to be able to check for a pattern with | in them. For example an expression like d*|*t should return true for a string like "dtest|test".
I'm no regex hero so I just tried a couple of things, like:
Regex Pattern = new Regex("s*\|*d"); //unable to build because of single backslash
Regex Pattern…
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as seen on Super User
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I'm looking to impose a hard limit on a movie. In particular when I have earbuds in and a reasonable volume set, loud or sudden sounds (gun shot, dramatic sound effects, gun fire, etc) are loud enough to hurt. Lowering the volume makes speech and other sounds hard to hear.
Is there a third party…
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as seen on Super User
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Is there some way to quickly toggle the state of volume normalization in Windows 7? When it's off watching movies late is tricky, and when it's on it messes with music in a bad way.
It's a great feature, but argh, it requires me to make my way through so many dialogs... Any solution that requires…
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as seen on SQL Blog
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As I finish up the plans for Monday’s database design precon, I am getting pretty excited for the day. This is the third time I have done this precon, and where the base slides are very similar, I have a few new twists in mind. One of my big ideas for my Database Design Workshop precon has always…
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as seen on Programmers
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I am working on an application that requires the storage of location information such as city, state, zip code, latitude, and longitude. I would like to ensure:
Location data is accurate
Detroit, CA
Detroit IS NOT in California
Detroit, MI
Detroit IS in Michigan
Cities and states are spelled…
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I sort of understand the concept of database normalization but always have a hard time explaining it in plain English especially for a job interview. I have read the wikipedia post, but still find it hard to explain the concept to none developers. "Design a database in a way not to get duplicated…
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