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Update a dataframe in pandas while iterating row by row
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now set_value is also deprectated, and should use .at (or .iat), so my loop looks like this: for i, row in df.iterrows(): ifor_val = something if <condition>: ifor_val = something_else df.at[i,'ifor'] = ifor_...
Which browsers support ?
...inked in the question sets async="true". It's not the correct way to do it now, but it was the only widely supported way to do it then. For example IE10p2 supported async="true" but did not support async="async"
– Philip Rieck
Feb 18 '14 at 16:10
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Two-dimensional array in Swift
...[0] += [345, 678]
If you had 3x2 array of 0(zeros) before these changes, now you have:
[
[0, 0, 234, 345, 678], // 5 elements!
[123, 456, 789],
[0, 0]
]
So be aware that sub arrays are mutable and you can redefine initial array that represented matrix.
Examine size/bounds before access...
Change auto increment starting number?
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Anyone know if it is possible to do WITHOUT an ALTER?
– thesmart
Jul 23 '12 at 22:15
3
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Always pass weak reference of self into block in ARC?
... NSUInteger idx, BOOL *stop) {
[self doSomethingWithObj:obj];
}];
Now, your object (self) has an explicit strong reference to the block. And the block has an implicit strong reference to self. That's a cycle, and now neither object will be deallocated properly.
Because, in a situation like...
How to change Android Studio's editor font?
Right now I am using the Darcula theme. I want to change the default font to something else. I go into Editor > Colors & Fonts > Font but all the options are greyed out. For Editor Font it shows Show only monospaced fonts as checked with Primary font as Monospaced, but neither o...
Is there a way to make R beep/play a sound at the end of a script?
...mething else on a different desktop. If I don't check frequently, I never know when something is finished. Is there a way to invoke a beep (like a system beep) or get R to play a sound or notify growl via some code at the end of my script?
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How can I validate a string to only allow alphanumeric characters in it?
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I detest regular expressions. I know that I will never remember the syntax. Even if I study it, there will come a time soon when it's all forgotten again.
– Sentinel
Jan 14 '15 at 17:26
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Foreign key constraint may cause cycles or multiple cascade paths?
...guaranteed that SomeOtherTable-records never belong to both Details, it is now impossible to make SomeOhterTable's records cascade delete for both details, because there are multiple cascading paths from Master to SomeOtherTable (one via Detail1 and one via Detail2).
Now you may already have underst...
How to count lines of Java code using IntelliJ IDEA?
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Works in IDEA 12 now, not found in the repository you need to install via manually downloading.
– sjakubowski
Sep 18 '13 at 15:36
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