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Define make variable at rule execution time
...TMP/hi.txt ;\
tar -C $$TMP cf $@ . ;\
rm -rf $$TMP ;\
I have consolidated some related tips here: https://stackoverflow.com/a/29085684/86967
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node.js child process - difference between spawn & fork
... for your machine/scenario.
Ultimately you could use spawn in a way that did the above, by sending spawn a Node command. But this would be silly, because fork does some things to optimize the process of creating V8 instances. Just making it clear, that ultimately spawn encompasses fork. Fork is ...
How to use Greek symbols in ggplot2?
...ere is what you do to obtain greek symbols
Text Labels: Use parse = T inside geom_text or annotate.
Axis Labels: Use expression(alpha) to get greek alpha.
Facet Labels: Use labeller = label_parsed inside facet.
Legend Labels: Use bquote(alpha == .(value)) in legend label.
You can see detailed us...
Pandas: create two new columns in a dataframe with values calculated from a pre-existing column
...td. dev. of 7 runs, 10 loops each)
60x faster than zip
In general, avoid using apply
Apply is generally not much faster than iterating over a Python list. Let's test the performance of a for-loop to do the same thing as above
%%timeit
A1, A2 = [], []
for val in df['a']:
A1.append(val**2)
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How to use git merge --squash?
...pecify it like so: git commit -a --author="Author" --message="Issue title #id"
– gaborous
Aug 17 '16 at 17:16
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How to do a git diff on moved/renamed file?
...red to the file’s size). For example,
-M90% means git should consider a delete/add pair to be a rename if more than
90% of the file hasn’t changed.
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Can you get DB username, pw, database name in Rails?
I'm writing a rake task that does some DB work outside of Rails/ActiveRecord.
5 Answers
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How do I add files without dots in them (all extension-less files) to the gitignore file?
...want to version:
git add -f -- myFile
Note that with git 2.9.x/2.10 (mid 2016?), it might be possible to re-include a file if a parent directory of that file is excluded if there is no wildcard in the path re-included.
Nguyễn Thái Ngọc Duy (pclouds) is trying to add this feature:
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How can I open several files at once in Vim?
... Once the files are opened use :tab all to put them in individual tabs.
– Backlin
Jun 24 '14 at 7:49
"A...
What's the meaning of 'origin' in 'git push origin master'
...med origin, which doesn't have any special technical meaning, it's just a widely used default name for an original remote repository. You can use foobar instead of origin if you like.
– skuro
Aug 25 '12 at 0:21
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