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Javascript shorthand ternary operator
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For anyone curious, this works because JS's || operator doesn't return true or false, it returns the first 'truthy' value. Say you have val0 and val1 as undefined, and val2 is 2, val3 is 3. val0 || val1 || val2 || val3 will return...
Storyboard warning: prototype table cells must have reuse identifiers
...e cells, you must give them all an indetifier, else just set the number to one in the prototype cell
– user1700737
Oct 21 '14 at 12:26
6
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Macro vs Function in C
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Macros are error-prone because they rely on textual substitution and do not perform type-checking. For example, this macro:
#define square(a) a * a
works fine when used with an integer:
square(5) --> 5 * 5 --> 25
but does very stran...
How to determine the longest increasing subsequence using dynamic programming?
...ecursive Solution
def recursive_solution(remaining_sequence, bigger_than=None):
"""Finds the longest increasing subsequence of remaining_sequence that is
bigger than bigger_than and returns it. This solution is O(2^n)."""
# Base case: nothing is remaining. ...
How to fix bower ECMDERR
...same problem and the answer above didn't work for me. But I found an other one. You can have a problem with your proxy. If you are behind a proxy you have to do theses steps :
put this in .bowerrc to get rid of the err ETIMEDOUT :
{
"directory": "app/bower_components",
"proxy": "http://PRO...
Failure [INSTALL_FAILED_ALREADY_EXISTS] when I tried to update my application
... update my applcation with new version that has same signature as previous one, shows above error.
6 Answers
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How to do a GitHub pull request
...n URL in the generated summary."
Github launches its own version since day one (February 2008), but redesigned that feature in May 2010, stating that:
Pull Request = Compare View + Issues + Commit comments
e-notes for "reposotory" (sic)
<humour>
That (pull request) isn't even defined p...
Selecting only numeric columns from a data frame
...frame. Compare x[1] vs x[,1] - first is data.frame, second is a vector. If one want to prevent conversion then must use x[, 1, drop=FALSE] .
– Marek
May 3 '11 at 11:46
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Is there a stopwatch in Java?
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You'll find one in
http://commons.apache.org/lang/
It's called
org.apache.commons.lang.time.StopWatch
But it roughly does the same as yours. If you're in for more precision, use
System.nanoTime()
See also this question here:
Tim...
Deleting a resource using http DELETE
... HTTP requests in a stateless system should be independent, the results of one request should not be dependent on a previous request. Consider what should happen if two users did a DELETE on the same resource simultaneously. It makes sense for the second request to get a 404. The same should be t...