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java get file size efficiently
...ecessarily the same amount of bytes as file length. To get the real length from a stream, you really need to read it (and count the read bytes meanwhile).
– BalusC
Nov 26 '09 at 13:51
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How to organize large R programs?
...bare bones first package: hilaryparker.com/2014/04/29/writing-an-r-package-from-scratch
– panterasBox
Sep 3 '15 at 14:32
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ggplot with 2 y axes on each side and different scales
...e plotting package I'm using doesn't support that." So I'm switching away from ggplot today for this particular project. =(
– Ken Williams
May 31 '12 at 22:14
63
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LaTeX table positioning
... paragraph. I want the 4 tables to appear between the two paragraphs which from what I've read means I should use the [h] option after beginning the table environment (e.g. \begin{table}[h] ).
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How can I validate a string to only allow alphanumeric characters in it?
...to be Unicode "letters". If this is your intention, then fine, but judging from the various regex expressions in the other answers, this is likely not what most considered to be alpha[numeric].
– Dono
Feb 20 '14 at 5:57
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Why can't I use the 'await' operator within the body of a lock statement?
The await keyword in C# (.NET Async CTP) is not allowed from within a lock statement.
8 Answers
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What is the JSF resource library for and how should it be used?
... specify and distinguish where those resources belong to and/or are coming from. Imagine that you happen to have a primefaces.css resource in your own webapp wherein you're overriding/finetuning some default CSS of PrimeFaces; if PrimeFaces didn't use a library name for its own primefaces.css, then ...
For each row in an R dataframe
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Even if you pull it from a database, you can pull them all at once and then filter the result in R; that will be faster than an iterative function.
– Shane
Nov 10 '09 at 3:13
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How does Go update third-party packages?
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A use case being: I just want to update all my packages that are obtained from the Github VCS, then you would just say:
go get -u github.com/... // ('...' being the wildcard).
This would go ahead and only update your github packages in the current $GOPATH
Same applies for within a VCS too, sa...
How to change the status bar color in Android?
...on device pre-lollipop thanks to the library support-v7-appcompat starting from version 21. Blogpost about support appcompat v21 from Chris Banes
Read more about the Material Theme on the official Android Developers website
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