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How can I have a newline in a string in sh?
... page:
Words of the form $'string' are treated specially. The word expands to
string, with backslash-escaped characters replaced as specified by the
ANSI C standard. Backslash escape sequences, if present, are decoded
as follows:
\a alert (bell)
\b backs...
Check if a Bash array contains a value
...ince array_to_string_internal() in array.c still loops over array elements and concatenates them into a string, it's probably not more efficient than the looping solutions proposed, but it's more readable.
if [[ " ${array[@]} " =~ " ${value} " ]]; then
# whatever you want to do when array conta...
How to Diff between local uncommitted changes and origin
Let's say I cloned a repository and started modifying files. I know that if I have local uncommitted changes, I can do a diff as follows git diff test.txt and it will show me the difference between the current local HEAD and the modified, uncommitted changes in the file. If I commit those changes ...
Pythonic way to combine FOR loop and IF statement
I know how to use both for loops and if statements on separate lines, such as:
10 Answers
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Why does C++ require a user-provided default constructor to default-construct a const object?
The C++ standard (section 8.5) says:
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Is there a way to recover from an accidental “svn revert”?
...ing TortoiseSVN on Windows, Revert first throws the files into Recycle Bin and then reverts them. You can dig into the Recycle Bin to recover the files.
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Is there a setting on Google Analytics to suppress use of cookies for users who have not yet given c
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EDIT (2019): The below answer predates GDPR and likely requires revision.
Google Analytics has a new set of APIs to assist with compliance with a cookie opt-out. Here's the documentation, and here's their help docs.
There has been some ambiguity as to whether the EU...
How do you stretch an image to fill a while keeping the image's aspect-ratio?
... The solution is almost right, you just have to invert the height and width in the css : if the image is 'tall', then the width should be 100% not the height (wich will be bigger and overflowing). The other way around for the wide photos.
– mbritto
Ju...
Trimming a huge (3.5 GB) csv file to read into R
So I've got a data file (semicolon separated) that has a lot of detail and incomplete rows (leading Access and SQL to choke). It's county level data set broken into segments, sub-segments, and sub-sub-segments (for a total of ~200 factors) for 40 years. In short, it's huge, and it's not going to fit...
Getting number of elements in an iterator in Python
...s are in an iterator in Python, in general, without iterating through each and counting?
16 Answers
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