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Get last result in interactive Python shell
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Additionally, it doesn't work if the variable _ has been previously assigned. It's not uncommon, as this symbol is also used for throwaway variables (see stackoverflow.com/questions/5893163/…)
– user6015398
Jul 5 '...
“Uncaught TypeError: Illegal invocation” in Chrome
...Error: Illegal invocation. However, alert.call(window) works fine, because now alert is executed in its original scope.
If you use .call() with your object like that:
support.animationFrame.call(window, function() {});
it works fine, because requestAnimationFrame is executed in scope of window i...
MongoDB仿关系型数据库Group聚合例子 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...nt.Create(dic),
BsonJavaScript.Create("function(obj,prev){if(prev._date < obj.date){prev._userName=obj.userName; prev._date=obj.date; prev._data=obj.data;}}"),
BsonJavaScript.Create("function(obj){ obj.userName=obj._userName; obj.date=obj._date; obj.data=obj._data; ...
Proper SCSS Asset Structure in Rails
..."bootstrap/bootstrap.scss";
Because of the order of the imports, you can now use the variables, loaded with @import "variables.scss"; in any other .scss file imported after it. So they can be used in type.scss in the bootstrap folder but also in my_model.css.scss.
After this create a folder named...
Creating an empty Pandas DataFrame, then filling it?
...me
import pandas as pd
import numpy as np
todays_date = datetime.datetime.now().date()
index = pd.date_range(todays_date-datetime.timedelta(10), periods=10, freq='D')
columns = ['A','B', 'C']
Note: we could create an empty DataFrame (with NaNs) simply by writing:
df_ = pd.DataFrame(index=index,...
Unable to find a locale path to store translations for file __init__.py
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Turns out you need to create a locale folder first using mkdir locale. If you are running the command from within an app folder, you need a locale folder within that app folder.
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How to get the python.exe location programmatically? [duplicate]
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That only makes sense if you are already running the Python interpreter. I think he's trying to find the location from outside of Python itself.
– John Montgomery
Apr 15 '09 at 10:38
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Javascript replace with reference to matched group?
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replacementValue can be a function and it is passed different arguments based on the catch groups? Amazing!
– daveloyall
Jun 13 '14 at 20:36
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What is the relationship between UIView's setNeedsLayout, layoutIfNeeded and layoutSubviews?
... correct:
[self.subview1 setNeedsLayout];
// but I don't claim to know definitively.
}
AFAIK layoutIfNeeded isn't generally meant to be overridden in your subclass. It's a method that you're meant to call when you want a view to be laid out right now. Apple's implementation might look so...
When to use in vs ref vs out
...arameter keyword out instead of ref . While I (I think) understand the difference between the ref and out keywords (that has been asked before ) and the best explanation seems to be that ref == in and out , what are some (hypothetical or code) examples where I should always use out an...