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Why were pandas merges in python faster than data.table merges in R in 2012?
...re-computed indexes for various columns to accelerate operations like data selection and merges. In this case (database joins) pandas' DataFrame contains no pre-computed information that is being used for the merge, so to speak it's a "cold" merge. If I had stored the factorized versions of the join...
Why I can't change directories using “cd”?
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To make a bash script that will cd to a select directory :
Create the script file
#!/bin/sh
# file : /scripts/cdjava
#
cd /home/askgelal/projects/java
Then create an alias in your startup file.
#!/bin/sh
# file /scripts/mastercode.sh
#
alias cdjava='. /scrip...
How to overload std::swap()
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@DaveAbrahams: The partial ordering is to select the function template to specialize when the explicit specialization matches more than one. The ::swap overload you added is more specialized than the std::swap overload for vector, so it captures the call and no spec...
How to uninstall Python 2.7 on a Mac OS X 10.6.4?
...thonProfileChanges-2.7
org.python.Python.PythonUnixTools-2.7
you can now select which packages you will unlink (remove).
This is the unlink documentation:
--unlink package-id
Unlinks (removes) each file referenced by package-id. WARNING: This command makes no attempt to perform re...
How to store a list in a column of a database table
... the names that you have given to your girl friend id 1 then you can use:
select names from nicknames where id = 1;
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Adding a guideline to the editor in Visual Studio
..., install the Editor Guidelines plugin, then right-click in the editor and select this:
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AngularJS : Prevent error $digest already in progress when calling $scope.$apply()
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Yesterday I've seen an issue where calling selectize.refreshItems() inside $timeout caused the dreaded recursive digest error. Any ideas how that could be?
– iwein
Mar 12 '14 at 6:02
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Mac zip compress without __MACOSX folder?
...p -d "$p" \*/.DS_Store || true
done
Create a new Service with Automator
Select "Files and Folders" in "Finder"
Add a "Shell Script Action"
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Reverting to a specific commit based on commit id with Git? [duplicate]
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@bwawok: But it's faster to select and middle-click-paste than to type even an abbreviated SHA1!
– Cascabel
Sep 3 '10 at 20:19
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Why is the gets function so dangerous that it should not be used?
...deal would have been to have a "string pointer" identify a byte that would select among a few different string/buffer/buffer-info formats, with one value of prefix byte indicating a struct that contained the prefix byte [plus padding], plus the buffer size, used size, and address of the actual text....