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C++: How to round a double to an int? [duplicate]
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float x = 55; // stored as 54.999999...
x = x + 0.5 - (x<0); // x is now 55.499999...
int y = (int)x; // truncated to 55
C++11 also introduces std::round, which likely uses a similar logic of adding 0.5 to |x| under the hood (see the link if interested) but is obviously more robust.
A follo...
How to insert element as a first child?
...nt.prepend(newFirstChild);
This is a new addition in (likely) ES7. It is now vanilla JS, probably due to the popularity in jQuery. It is currently available in Chrome, FF, and Opera. Transpilers should be able to handle it until it becomes available everywhere.
P.S. You can directly prepend strin...
Can Maven be made less verbose?
...too quiet. I'm running maven under CI
With Maven 3.6.1 (April 2019), you now have an option to suppress the transfer progress when downloading/uploading in interactive mode.
mvn --no-transfer-progress ....
or in short:
mvn -ntp ... ....
That is what Ray proposed in the comments with MNG-...
Get Substring - everything before certain char
... Instead of s.Substring(0, n) one can use s.Remove(n) when it is known (like here) that the length of the string s strictly exceeds n.
– Jeppe Stig Nielsen
Nov 27 '14 at 12:45
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Convert Month Number to Month Name Function in SQL
... datetime value rather than just the month number; to get this to work you now need to 'invent' a date/time value. Think the solution from leoinfo was a bit more relevant
– schizoid04
Jun 4 '18 at 19:51
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Convert a list to a dictionary in Python
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… or simply zip(i, i), in Python 3, since zip() now returns an iterator.
– Eric O Lebigot
Jan 2 '11 at 0:07
5
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Getting the object's property name
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@Bakudan know what you mean, but a better way to put it is that you should use hasOwnProperty if you don't want inherited properties. That way you're not blindly following some rule. It may be that in some cases you actually do want to...
Why is `[` better than `subset`?
...eval(expr, envir, enclos) : object 'cyl' not found
because R no longer "knows" where to find the object called 'cyl'. He also points out the truly bizarre stuff that can happen if by chance there is an object called 'cyl' in the global environment:
cyl <- 4
subscramble(mtcars, cyl == 4)
cyl &...
How do you install Boost on MacOS?
How do you install Boost on MacOS?
Right now I can't find bjam for the Mac.
10 Answers
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Stop jQuery .load response from being cached
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Love it! Now I don't have to use overly verbose .ajax calls and can use the shortcuts!
– Gattster
Jun 1 '11 at 1:05
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