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What optimizations can GHC be expected to perform reliably?
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3 Answers
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Creating an empty Pandas DataFrame, then filling it?
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350
Here's a couple of suggestions:
Use date_range for the index:
import datetime
import pandas ...
Change the font of a UIBarButtonItem
... forState:(UIControlState)state
but this is for iOS5 only. For iOS 3/4, you will have to use a custom view.
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How do I select text nodes with jQuery?
...).addBack().contents().filter(function() {
return this.nodeType == 3;
});
};
getTextNodesIn(el);
Note: If you're using jQuery 1.7 or earlier, the code above will not work. To fix this, replace addBack() with andSelf(). andSelf() is deprecated in favour of addBack() from 1.8 onwards.
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Access nested dictionary items via a list of keys?
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236
Use reduce() to traverse the dictionary:
from functools import reduce # forward compatibility ...
How to convert nanoseconds to seconds using the TimeUnit enum?
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answered May 29 '09 at 3:00
Adam RosenfieldAdam Rosenfield
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Django migration strategy for renaming a model and relationship fields
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131
So when I tried this, it seems you can condense Step 3 - 7:
class Migration(migrations.Migrati...
Find size of Git repository
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UPDATE git 1.8.3 introduced a more efficient way to get a rough size: git count-objects -vH (see answer by @VonC)
For different ideas of "complete size" you could use:
git bundle create tmp.bundle --all
du -sh tmp.bundle
Close (but not...
In Gradle, how do I declare common dependencies in a single place?
... [ // Groovy map literal
spring_core: "org.springframework:spring-core:3.1",
junit: "junit:junit:4.10"
]
From a child script, you can then use the dependency declarations like so:
dependencies {
compile libraries.spring_core
testCompile libraries.junit
}
To share dependency decl...