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Rails: Is there a rails trick to adding commas to large numbers?
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Create an array with same element repeated multiple times
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It's much more efficient to allocate all of the entries up front, with arr = new Array(len);, then assign to them by index in the loop, i.e. arr[i] = value;. That way you only pay O(n) rather than having to keep reallocating the array...
Is quitting an application frowned upon?
...d. Those users simply don't think about "terminating" the Android app, any more than they think about "terminating" a Web page or "terminating" a thermostat.
iPhone users are much the same way, in that pressing the iPhone button does not necessarily "feel" like the app was terminated since many iPho...
Is it pythonic to import inside functions?
...o the import where it's needed and then if the code stays I'll make things more permanent by moving the import line to the top of the file.
One other point, I prefer to get an ImportError exception before any code is run -- as a sanity check, so that's another reason to import at the top.
I use p...
Open and write data to text file using Bash?
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Parsing a CSV file using NodeJS
...so well supported and happens to have approximately one order of magnitude more users. npmjs.com/package/csv
– steampowered
Jun 16 '15 at 16:21
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Why doesn't Python have a sign function?
... +/-nan, etc)
So they decided to implement only copysign, which (although more verbose) can be used to delegate to the end user the desired behavior for edge cases - which sometimes might require the call to cmp(x,0).
I don't know why it's not a built-in, but I have some thoughts.
copysign(x,y)...
What is the difference between lower bound and tight bound?
...is far preferential since it takes at least n log n (Omega n log n) and no more than n log n (Big O n log n).
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UICollectionView current visible cell index
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select * vs select column
...se columns in select query, is there any performance degradation regarding more/less I/O or memory?
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