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When to catch java.lang.Error?
... sometimes you need to catch specific errors.
If you're writing framework-ish code (loading 3rd party classes), it might be wise to catch LinkageError (no class def found, unsatisfied link, incompatible class change).
I've also seen some stupid 3rd-party code throwing subclasses of Error, so you'...
Background image jumps when address bar hides iOS/Android/Mobile Chrome
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This issue is caused by the URL bars shrinking/sliding out of the way and changing the size of the #bg1 and #bg2 divs since they are 100% height and "fixed". Since the background image is set to "cover" it will adjust the imag...
How do I break out of a loop in Scala?
...ns to break out of loops.
Suppose you want to sum numbers until the total is greater than 1000. You try
var sum = 0
for (i <- 0 to 1000) sum += i
except you want to stop when (sum > 1000).
What to do? There are several options.
(1a) Use some construct that includes a conditional that y...
Quickly reading very large tables as dataframes
... read.table() has a lot of convenient features, but it seems like there is a lot of logic in the implementation that would slow things down. In my case, I am assuming I know the types of the columns ahead of time, the table does not contain any column headers or row names, and does not have any ...
demystify Flask app.secret_key
If app.secret_key isn't set, Flask will not allow you to set or access the session dictionary.
2 Answers
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Is there a simple, elegant way to define singletons? [duplicate]
There seem to be many ways to define singletons in Python. Is there a consensus opinion on Stack Overflow?
21 Answers
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Is there a way to specify how many characters of a string to print out using printf()?
Is there a way to specify how many characters of a string to print out (similar to decimal places in int s)?
8 Answers
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Is DateTime.Now the best way to measure a function's performance?
...();
sw.Stop();
Console.WriteLine("Time taken: {0}ms", sw.Elapsed.TotalMilliseconds);
Stopwatch automatically checks for the existence of high-precision timers.
It is worth mentioning that DateTime.Now often is quite a bit slower than DateTime.UtcNow due to the work that has to be done with timez...
Why can't overriding methods throw exceptions broader than the overridden method?
I was going through SCJP 6 book by Kathe sierra and came across this explanations of throwing exceptions in overridden method. I quite didn't get it. Can any one explain it to me ?
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Reminder - \r\n or \n\r?
I just can't remember those. So, what is the right way to properly terminate old fashioned ASCII lines?
10 Answers
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