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How do you validate a URL with a regular expression in Python?
I'm building an app on Google App Engine. I'm incredibly new to Python and have been beating my head against the following problem for the past 3 days.
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Remove NA values from a vector
I have a huge vector which has a couple of NA values, and I'm trying to find the max value in that vector (the vector is all numbers), but I can't do this because of the NA values.
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Program does not contain a static 'Main' method suitable for an entry point
...ad copied all file from an old project to a new Windows Store App project, and the Build Action was set to Page instead of ApplicationDefinition. I switched back to ApplicationDefinition, but I also had to delete the folder obj\Debug.
– Richard H
Jan 15 '13 at ...
How do I check out a remote Git branch?
...is case use
git checkout -b test <name of remote>/test
or the shorthand
git checkout -t <name of remote>/test
With >1 Remotes
Before you can start working locally on a remote branch, you need to fetch it as called out in answers below.
To fetch a branch, you simply need to:
git fetc...
Find out who is locking a file on a network share
...an even use Action -> Connect to another computer to the file on a NAS, and it even works with our linux based NAT! Why didn't I try this earlier?
– olorin
Sep 24 '10 at 12:51
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Difference between require, include, require_once and include_once?
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There are require and include_once as well.
So your question should be...
When should I use require vs. include?
When should I use require_once vs. require
The answer to 1 is described here.
The require() function is identical to inc...
What do numbers using 0x notation mean?
... @Luc The first one is correct. Although more often I see just 0xffffffff and such. (0xffffffff = -1 for 32-bit int assuming 2's complement)
– Mysticial
Jul 23 '13 at 16:30
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Lock-free multi-threading is for real threading experts
I was reading through an answer that Jon Skeet gave to a question and in it he mentioned this:
6 Answers
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Java Timer vs ExecutorService?
...code where I schedule a task using java.util.Timer . I was looking around and saw ExecutorService can do the same. So this question here, have you used Timer and ExecutorService to schedule tasks, what is the benefit of one using over another?
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What is an MvcHtmlString and when should I use it?
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I stand corrected - actually the MvcHtmlString.Create method detects whether IHtmlString is available and dynamically creates the returned class to support it if it is: windowsitpro.com/article/net-framework/Encoding-and-Strings/...