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Standardize data columns in R
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EDIT 3 (2020): Thanks to @mj_whales: the old solution is deprecated and now we need to use mutate_at.
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First-time database design: am I overengineering? [closed]
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1. Thanks, that's reassuring! 2 & 3. I still don't know how indexes work, it's something I have planned to read up on. If we ever have the "problem" of reaching a million records there will probably be a budget to hire experienced developers :P Thanks for the insight into diff...
C# string reference type?
I know that "string" in C# is a reference type. This is on MSDN. However, this code doesn't work as it should then:
10 An...
How to print the full traceback without halting the program?
...ever, a best practice is to have a logger set up for your module. It will know the name of the module and be able to change levels (among other attributes, such as handlers)
import logging
logging.basicConfig(level=logging.DEBUG)
logger = logging.getLogger(__name__)
In which case, you'll want the l...
Bold & Non-Bold Text In A Single UILabel?
...istance(from: nonBoldRange!.lowerBound, to: nonBoldRange!.upperBound))
// Now just build the attributed string as before :)
label.attributedText = attributedString(from: targetString,
nonBoldRange: nonBoldNSRange)
Result (Assuming English and Japanese Local...
Is it possible to hide extension resources in the Chrome web inspector network tab?
...e solution I was after (I'd have preferred a global setting), but there is now a way to filter out requests from extensions, as mentioned by a commenter on the issue I originally opened.
In the network tab filter box, enter the string -scheme:chrome-extension (as shown below):
This is case-sensi...
Clear icon inside input text
...ble).
jQ will add the class x (if input has value) showing the clear icon.
Now all we need is to target with jQ the inputs with class x and detect on mousemove if the mouse is inside that 18px "x" area; if inside, add the class onX.
Clicking the onX class removes all classes, resets the input value ...
Run an Application in GDB Until an Exception Occurs
...mes catch is not the best way to debug exception handling: if you need to know exactly where an exception is raised, it is better to stop before the exception handler is called, since that way you can see the stack before any unwinding takes place. If you set a breakpoint in an exception handler ins...
Call by name vs call by value in Scala, clarification needed
...def something() = {
println("calling something")
1 // return value
}
Now we are going to define two function that accept Int arguments that are exactly the same except that one takes the argument in a call-by-value style (x: Int) and the other in a call-by-name style (x: => Int).
def callB...
Applicatives compose, monads don't
...s -> let nmnt = ns >>= (return . f) in ???
we get this far, but now our layers are all jumbled up. We have an n (m (n t)), so we need to get rid of the outer n. As Alexandre C says, we can do that if we have a suitable
swap :: n (m t) -> m (n t)
to permute the n inwards and join it ...