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What are the underlying data structures used for Redis?
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I'll try to answer your question, but I'll start with something that may look strange at first: if you are not interested in Redis internals you should not care about how data types are implemented internally. This is for a simple reason: for every Redis operation you'll find the ...
Git Tag list, display commit sha1 hashes
...ag object, you can run:
git show-ref --tags
The output will then look something like:
0e76920bea4381cfc676825f3143fdd5fcf8c21f refs/tags/1.0.0
5ce9639ead3a54bd1cc062963804e5bcfcfe1e83 refs/tags/1.1.0
591eceaf92f99f69ea402c4ca639605e60963ee6 refs/tags/1.2.0
40414f41d0fb89f7a0d2f17736a906943c05acc...
How to efficiently concatenate strings in go
In Go, a string is a primitive type, which means it is read-only, and every manipulation of it will create a new string.
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ZSH complains about RVM __rvm_cleanse_variables: function definition file not found
... be read in on future invocations. This dumped file is .zcompdump in the same directory as the startup files (i.e. $ZDOTDIR or $HOME).
– csgui
Apr 9 '13 at 9:41
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Handle spring security authentication exceptions with @ExceptionHandler
...n by spring security custom filters because they run before the controller methods are invoked.
11 Answers
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Continuous Integration for Ruby on Rails? [closed]
...ion for Ruby on Rails, but haven't been too pleased with the results. I came from a .NET shop that used CruiseControl.NET and was really spoiled with its ease of use and rich status/reporting.
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How to permanently set $PATH on Linux/Unix? [closed]
...purpose.
The variable values are usually stored in either a list of assignments or a shell script that is run at the start of the system or user session. In case of the shell script you must use a specific shell syntax and export or set commands.
System wide
/etc/environment List of unique assig...
How to load JAR files dynamically at Runtime?
...doing it by writing your own ClassLoader , but that's a lot of work for something that should (in my mind at least) be as easy as calling a method with a JAR file as its argument.
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How to make a flat list out of list of lists?
...f lists l,
flat_list = [item for sublist in l for item in sublist]
which means:
flat_list = []
for sublist in l:
for item in sublist:
flat_list.append(item)
is faster than the shortcuts posted so far. (l is the list to flatten.)
Here is the corresponding function:
flatten = lambda...
Find row where values for column is maximal in a pandas DataFrame
...ort pandas
>>> import numpy as np
>>> df = pandas.DataFrame(np.random.randn(5,3),columns=['A','B','C'])
>>> df
A B C
0 1.232853 -1.979459 -0.573626
1 0.140767 0.394940 1.068890
2 0.742023 1.343977 -0.579745
3 2.125299 -0.649328 -0.211692
4 ...