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How to check permissions of a specific directory?
I know that using ls -l "directory/directory/filename" tells me the permissions of a file. How do I do the same on a directory?
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How to check whether a Storage item is set?
How can I check if an item is set in localStorage ? Currently I am using
13 Answers
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ld cannot find an existing library
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The problem is the linker is looking for libmagic.so but you only have libmagic.so.1
A quick hack is to symlink libmagic.so.1 to libmagic.so
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How to create a file in Ruby
I'm trying to create a new file and things don't seem to be working as I expect them too. Here's what I've tried:
9 Answers...
Determine the number of NA values in a column
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Thank you for this. To expand this a little bit. In counting amount of arbitrary value, other than NA is writing a boolean function is.value and then using sum(is.value(df$col)) the way to go or is there a more concise direct syntax fo...
browser sessionStorage. share between tabs?
...y site which I want to clear when the browser is closed. I chose sessionStorage to store those values. When tab is closed they are indeed cleared, and kept if the user presses f5; But if the user opens some link in a different tab these values are unavailable.
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PostgreSQL: How to change PostgreSQL user password?
How do I change the password for PostgreSQL user?
17 Answers
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How to remove all leading zeroes in a string
... convert the string to an integer. See the comments on Svisstack's answer for why this is not such a great solution.
– lonesomeday
Apr 18 '16 at 8:15
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NUnit vs. MbUnit vs. MSTest vs. xUnit.net [closed]
There are quite a lot of unittesting frameworks out there for .NET. I found this little feature comparison: http://xunit.github.io/docs/comparisons.html
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SparseArray vs HashMap
...replace HashMap when the key is a primitive type.
There are some variants for different key/value types, even though not all of them are publicly available.
Benefits are:
Allocation-free
No boxing
Drawbacks:
Generally slower, not indicated for large collections
They won't work in a non-Androi...