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Difference between two dates in MySQL
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Note: When using TIMEDIFF function, the time value can range from "-838:59:59" to "838:59:59". w3schools.com/SQl/func_mysql_timediff.asp
– cREcker
Aug 3 '17 at 12:21
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ReactJS: Modeling Bi-Directional Infinite Scrolling
...f 10k allocations is too big, you can instead pass a function that takes a range and return the elements.
<List>
{thousandelements.map(function() { return <Element /> })}
</List>
Your List component is keeping track of what the scroll position is and only renders the children ...
Why is the order in dictionaries and sets arbitrary?
...st, and there
are no collisions at all for dicts indexed by a contiguous range of ints.
The same is approximately true when keys are "consecutive" strings. So this
gives better-than-random behavior in common cases, and that's very desirable.
OTOH, when collisions occur, the tendency to f...
Mod in Java produces negative numbers [duplicate]
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@The111 Imagine the range of your integer is [-8, 7], (((5 % 6) + 6) % 6) = ((5 + 6) % 6) = (-5 % 6) = -5, but 5 % 6 is supposed to be positive. Substitute appropriately large numbers for 32 bit ints like 536887296 and 1610612736 and it is clear...
How do I repeat an edit on multiple lines in Vim?
... the visual mode in this case can sometimes be convenient to select a line range. But commands and macros are more flexible and powerful in this case.
– Bohr
Oct 2 '13 at 2:12
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Replacing instances of a character in a string
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If you want to replace a single semicolon:
for i in range(0,len(line)):
if (line[i]==";"):
line = line[:i] + ":" + line[i+1:]
Havent tested it though.
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How to make type=“number” to positive numbers only
...lues. With step set it only lets you type in values outside of the min-max range - still wrong, but better.
– David Burton
Mar 3 '16 at 12:53
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In Vim, is there a way to paste text in the search line?
... contents of the "a" register from Vim's Ex command line with:
:[OPTIONAL_RANGE]@a
I use it all the time.
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Use String.split() with multiple delimiters
...he hyphen in this case, because [-.] couldn't possibly be interpreted as a range.
– Alan Moore
May 13 '11 at 15:40
1
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uppercase first character in a variable with bash
...rk in language/locales incorporating letters that aren't in the a-z or A-Z ranges.
– Charles Duffy
Mar 8 '17 at 18:01
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