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Get a filtered list of files in a directory
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Oh, I just noticed that the Python docs say glob() "is done by using the os.listdir() and fnmatch.fnmatch() functions in concert, and not by actually invoking a subshell". In other words, glob() doesn't have the efficiency improvements one might expect.
– Ben...
Factors in R: more than an annoyance?
One of the basic data types in R is factors. In my experience factors are basically a pain and I never use them. I always convert to characters. I feel oddly like I'm missing something.
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Which one will execute faster, if (flag==0) or if (0==flag)?
Interview question: Which one will execute faster, if (flag==0) or if (0==flag) ? Why?
16 Answers
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What is the best way to prevent session hijacking?
... link) in addition to the regular session cookie. Then, when a user visits one of your "sensitive" areas, redirect them to HTTPS, and check for the presence of that secure cookie. A real user will have it, a session hijacker will not.
EDIT: This answer was originally written in 2008. It's 2016 now,...
What are the big improvements between guava and apache equivalent libraries?
...ity that is absent from their counterpart. Thus, limiting yourself to only one library might be unwise.
That being said, if I had to choose, I'd opt to use Guava, keeping Apache Commons around for the (rare) cases where Guava does not have the needed functionality. Let me attempt to explain why.
G...
Rename a class in Xcode: Refactor… is grayed out (disabled). Why?
... +1 for this. Some corners of XCode still have rough areas and this is one of them. Sometimes if saving doesn't enable refactoring, rebuilding will.
– memmons
Feb 25 '11 at 1:33
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How to Set focus to first text input in a bootstrap modal after shown
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this works only if there is one modal on the page? what if more than one?
– Ramesh Pareek
Apr 19 '16 at 9:18
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The difference between try/catch/throw and try/catch(e)/throw e
...at very line throw e on the method containing that try-catch block.
Which one should you use? It really depends on each case.
Let's say you have a Person class with a .Save() method that will persist it into a database. Let's say that your application executes the Person.Save() method somewhere. I...
What is the difference between save and export in Docker?
...any change you made, any data file written during the container life. This one is more like a traditional backup.
It will give you a flat .tar archive containing the filesystem of your container.
Edit: as my explanation may still lead to confusion, I think that it is important to understand that...
How to convert the ^M linebreak to 'normal' linebreak in a file opened in vim?
...Why did this get a downvote? It works, even when your file is mashed onto one line because it's got the wrong line end.
– Paul Tomblin
May 1 '09 at 13:12
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