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Checking for NULL pointer in C/C++ [closed]
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206
In my experience, tests of the form if (ptr) or if (!ptr) are preferred. They do not depend on ...
CSS: transition opacity on mouse-out?
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202
You're applying transitions only to the :hover pseudo-class, and not to the element itself.
.i...
UILabel is not auto-shrinking text to fit label size
...tting this property, minimumScaleFactor MUST be set too (a good default is 0.5).
Swift
var adjustsFontSizeToFitWidth: Bool { get set }
Objective-C
@property(nonatomic) BOOL adjustsFontSizeToFitWidth;
A Boolean value indicating whether spacing between letters should be adjusted to fit the string w...
DbArithmeticExpression arguments must have a numeric common type
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edited Dec 14 '17 at 11:03
community wiki
7 r...
How to add texture to fill colors in ggplot2
... Claus Wilke
12.6k44 gold badges3636 silver badges7070 bronze badges
answered Jun 10 '10 at 1:08
AndreasAndreas
5,8841010 gold ba...
How to get min/max of two integers in Postgres/SQL?
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306
Have a look at GREATEST and LEAST.
UPDATE my_table
SET my_column = GREATEST(my_column - 10, 0)...
Entity Framework - Start Over - Undo/Rollback All Migrations
... to rollback all migrations you can use:
Update-Database -TargetMigration:0
or equivalent:
Update-Database -TargetMigration:$InitialDatabase
In some cases you can also delete database and all migration classes.
share
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List comprehension vs map
... map when using exactly the same function:
$ python -mtimeit -s'xs=range(10)' 'map(hex, xs)'
100000 loops, best of 3: 4.86 usec per loop
$ python -mtimeit -s'xs=range(10)' '[hex(x) for x in xs]'
100000 loops, best of 3: 5.58 usec per loop
An example of how performance comparison gets completely r...
regex for zip-code
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edited Apr 5 '10 at 6:57
answered Apr 5 '10 at 6:45
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pyplot axes labels for subplots
...mmon labels.
import random
import matplotlib.pyplot as plt
x = range(1, 101)
y1 = [random.randint(1, 100) for _ in xrange(len(x))]
y2 = [random.randint(1, 100) for _ in xrange(len(x))]
fig = plt.figure()
ax = fig.add_subplot(111) # The big subplot
ax1 = fig.add_subplot(211)
ax2 = fig.add_subpl...