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How to equalize the scales of x-axis and y-axis in Python matplotlib?
...er into the api to do this:
from matplotlib import pyplot as plt
plt.plot(range(5))
plt.xlim(-3, 3)
plt.ylim(-3, 3)
plt.gca().set_aspect('equal', adjustable='box')
plt.draw()
doc for set_aspect
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Regular expression for letters, numbers and - _
...the character class definition, otherwise it has a different meaning (i.e. range). The . also has a different meaning outside character class definitions, but inside, it's just a literal .
References
regular-expressions.info/Anchors, Character Classes and Repetition
In PHP
Here's a snippet t...
Listing all permutations of a string/integer
...able<IEnumerable<int>> result =
GetPermutations(Enumerable.Range(1, 3), 3);
Output - a list of integer-lists:
{1,2,3} {1,3,2} {2,1,3} {2,3,1} {3,1,2} {3,2,1}
As this function uses LINQ so it requires .net 3.5 or higher.
...
Are there any standard exit status codes in Linux?
...rgument to exit
128+n: Fatal error signal "n"
255: Exit status out of range (exit takes only integer args in the range 0 - 255)
Part 2: sysexits.h
The ABSG references sysexits.h.
On Linux:
$ find /usr -name sysexits.h
/usr/include/sysexits.h
$ cat /usr/include/sysexits.h
/*
* Copyright (...
What is a magic number, and why is it bad? [closed]
...retty good because "2" by itself could be anything. Only when we limit the range and domain of understanding to "my program" where 2 is the default_padding in the GUI UX parts of "my program", do we finally make sense of "2" in its proper context. Here "2" is a "magic" number, which is factored out ...
What is the difference between 'log' and 'symlog'?
...rical log, and allows positive and negative values.
symlog allows to set a range around zero within the plot will be linear instead of logarithmic.
I think everything will get a lot easier to understand with graphics and examples, so let's try them:
import numpy
from matplotlib import pyplot
# E...
What are the Ruby Gotchas a newbie should be warned about? [closed]
...ly an alias for ==
"joe" === "joe" # true
"joe" === "bob" # false
# but ranges match any value they include
(1..10) === 5 # true
(1..10) === 19 # false
(1..10) === (1..10) # false (the range does not include itself)
# arrays just match equal arrays, but they do not match included v...
Transaction isolation levels relation with locks on table
...he transaction and are held until the transaction completes.
SERIALIZABLE: Range locks are placed in the range of key values that match the search conditions of each statement executed in a transaction. [...] The range locks are held until the transaction completes.
...
Why does int i = 1024 * 1024 * 1024 * 1024 compile without error?
...compile-error since the right hand side still is an int-literal and out of range.
So operations with int-values (and that's including assignments) may overflow without a compile-error (and without a runtime-error as well), but the compiler just can't handle those too-large literals.
...
Why should we NOT use sys.setdefaultencoding(“utf-8”) in a py script?
...eError: 'ascii' codec can't decode byte 0xe2 in position 0: ordinal not in range(128)
(My console is configured as UTF-8, so "€" = '\xe2\x82\xac', hence exception on \xe2)
or
UnicodeEncodeError: 'ascii' codec can't encode character u'\u20ac' in position 0: ordinal not in range(128)
sys.setde...