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What's the difference between HEAD^ and HEAD~ in Git?
...e-ref failed" if $?;
# for browsing history - http://blog.kfish.org/2010/04/git-lola.html
system "git config alias.lol 'log --graph --decorate --pretty=oneline --abbrev-commit'";
system "git config alias.lola 'log --graph --decorate --pretty=oneline --abbrev-commit --all'";
It adds aliases in the...
Split comma-separated strings in a column into separate rows
...es.
For smaller data frames, Matt's base R solution and data.table method 4 seem to have less overhead than the other methods.
Code
director <-
c("Aaron Blaise,Bob Walker", "Akira Kurosawa", "Alan J. Pakula",
"Alan Parker", "Alejandro Amenabar", "Alejandro Gonzalez Inarritu",
"Ale...
Is there a performance gain in using single quotes vs double quotes in ruby?
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14 Answers
14
Active
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How to execute Python scripts in Windows?
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144
When you execute a script without typing "python" in front, you need to know two things about h...
Lambda capture as const reference?
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answered Sep 22 '10 at 19:40
Steve MSteve M
7,37022 gold badges2222 silver badges2626 bronze badges
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no acceptable C compiler found in $PATH when installing python
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466
The gcc compiler is not in your $PATH.
It means either you dont have gcc installed or it's not...
Is it better to use C void arguments “void foo(void)” or not “void foo()”? [duplicate]
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answered Mar 28 '09 at 23:48
Daniel EarwickerDaniel Earwicker
106k3434 gold badges190190 silver badges271271 bronze badges
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Convert sqlalchemy row object to python dict
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240
You may access the internal __dict__ of a SQLAlchemy object, like the following::
for u in ses...
Programmatically creating Markdown tables in R with KnitR
...:|------------:|-------------:|
| 5,1| 3,5| 1,4|
| 4,9| 3,0| 1,4|
| 4,7| 3,2| 1,3|
| 4,6| 3,1| 1,5|
| 5,0| 3,6| 1,4|
| 5,4| 3,9| ...
How to read and write excel file
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145
Try the Apache POI HSSF. Here's an example on how to read an excel file:
try {
POIFSFileSy...