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Split list into multiple lists with fixed number of elements
...e looking for grouped. It returns an iterator, but you can convert the result to a list,
scala> List(1,2,3,4,5,6,"seven").grouped(4).toList
res0: List[List[Any]] = List(List(1, 2, 3, 4), List(5, 6, seven))
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Is there a way to pass optional parameters to a function?
...nother="yes")
no optional parameter, sorry
Second, you can supply a default parameter value of some value like None which a caller would never use. If the parameter has this default value, you know the caller did not specify the parameter. If the parameter has a non-default value, you know it came...
Proper use of the IDisposable interface
...i.e. destroyed), call Dispose in case the user forgot to
Dispose(); //<--Warning: subtle bug! Keep reading!
}
But there's a bug in that code. You see, the garbage collector runs on a background thread; you don't know the order in which two objects are destroyed. It is entirely possible that...
how do you filter pandas dataframes by multiple columns
To filter a dataframe (df) by a single column, if we consider data with male and females we might:
6 Answers
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What happens when a computer program runs?
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int mul( int x, int y ) {
return x * y; // this stores the result of MULtiplying the two variables
// from the stack into the return value address previously
// allocated, then issues a RET, which resets the stack frame
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What’s the best RESTful method to return total number of items in an object?
...ct URLs and affect my data. However, this data is paged (limited to 30 results at a time).
12 Answers
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Format a date using the new date time API
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I would like to just work with LocalTime, how do you perform formatting without running into this exception java.time.temporal.UnsupportedTemporalTypeException: Unsupported field: DayOfWeek
– samuel owino
Jan 11 at 23:11
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What is a StackOverflowError?
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Ha ha ha, so here it is: while (points < 100) {addMouseListeners(); moveball(); checkforcollision(); pause(speed);} Wow do I feel lame for not realizing that I would end up with a stackfull of mouse listeners... Thanks guys!
– Ziggy
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What is that “total” in the very first line after ls -l? [closed]
...lly 512 or 1024 bytes) which is freely modifiable with the
--block-size=<int> flag on ls, the POSIXLY_CORRECT=1 GNU
environment variable (to get 512-byte units), or the -k flag to force
1kB units.
physical_block_size is the OS dependent value of an internal block interface, which may ...
Why must wait() always be in synchronized block
...ould look something along the lines below
class BlockingQueue {
Queue<String> buffer = new LinkedList<String>();
public void give(String data) {
buffer.add(data);
notify(); // Since someone may be waiting in take!
}
public String take(...