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Copy multiple files in Python
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139
You can use os.listdir() to get the files in the source directory, os.path.isfile() to see if ...
Breakpoints are crossed out, how can I make them valid?
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edited Feb 4 '14 at 14:19
lhan
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answe...
Check if an apt-get package is installed and then install it if it's not on Linux
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317
To check if packagename was installed, type:
dpkg -s <packagename>
You can also use dp...
Why is my program slow when looping over exactly 8192 elements?
...ue from the following related questions:
Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
Matrix multiplication: Small difference in matrix size, large difference in timings
But that's only because there's one other problem with the code.
Starting from th...
Xcode 4 and Core Data: How to enable SQL Debugging
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150
You should be looking at the same place you get NSLOGS
And you should Go to Product -> Edi...
How to send data to local clipboard from a remote SSH session
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11 Answers
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Using CSS for a fade-in effect on page load
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Method 1:
If you are looking for a self-invoking transition then you should use CSS 3 Animations. They aren't supported either, but this is exactly the kind of thing they were made for.
CSS
#test p {
margin-top: 25px;
fo...
PostgreSQL LIKE query performance variations
...k), it just won't buy you better performance. Typically no big loss, since 1- or 2-letter strings are hardly selective (more than a few percent of the underlying table matches) and index support would not improve performance to begin with, because a full table scan is faster.
text_pattern_ops for...
What really happens in a try { return x; } finally { x = null; } statement?
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.method private hidebysig static int32 Test() cil managed
{
.maxstack 1
.locals init (
[0] int32 CS$1$0000)
L_0000: call int32 Program::SomeNumber()
L_0005: stloc.0
L_0006: leave.s L_000e
L_0008: call void Program::Foo()
L_000d: endfinally
L_000e: ldloc.0
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How to do math in a Django template?
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156
You can use the add filter:
{{ object.article.rating_score|add:"-100" }}
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