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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 ...
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...
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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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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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...
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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Advantages of using prototype, vs defining methods straight in the constructor? [duplicate]
... -> 3, 3
Notice how changing the method applied to both instances? This is because ins1 and ins2 share the same calc() function. In order to do this with public methods created during construction, you'd have to assign the new method to each instance that has been created, which is an awkward...
When would I need a SecureString in .NET?
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answered Jul 21 '16 at 0:12
Joe HealyJoe Healy
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How do I use $scope.$watch and $scope.$apply in AngularJS?
...how to use $scope.$watch and $scope.$apply . The official documentation isn't helpful.
6 Answers
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