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Calculate number of hours between 2 dates in PHP
...when DST ends. So its usage is subjective to your desired outcome and date range.
See the current bug report
//set timezone to UTC to disregard daylight savings
date_default_timezone_set('America/New_York');
$interval = new \DateInterval('PT1H');
//DST starts Apr. 2nd 02:00 and moves to 03:00
...
When should I use double instead of decimal?
...ven if it had to be padded out to 16 bytes; it would have allowed a larger range than double or Decimal, much better speed than Decimal, support for transcendental operations (e.g. sin(x), log(x), etc.), and precision which while not quite as good as Decimal would be way better than double.
...
How to get Enum Value from index in Java?
... wouldn't consider it save as it doesn't deal with indexes that are out of range.
The solution I ended up using might not be as simple but it's completely save and won't hurt the performance of your code even with big enums:
public enum Example {
UNKNOWN(0, "unknown"), ENUM1(1, "enum1"), ENUM...
What is “2's Complement”?
...to the point and also for explaining why the negative values have a larger range the positive ones. I came looking for the reason for the range difference.
– Ashwin
Dec 26 '14 at 5:22
...
Scala: What is the difference between Traversable and Iterable traits in Scala collections?
...oreach, to traverse all elements at once without stopping.
Something like Range(1, 10) needs to have only 2 integers as state as a Traversable. But Range(1, 10) as an Iterable gives you an iterator which needs to use 3 integers for state, one of which is an index.
Considering that Traversable also...
What is the difference between procedural programming and functional programming? [closed]
...x:<*>)
{ [*] 2 .. $n }
say 5!; # 120
This example also shows range creation (2..$n) and the list reduction meta-operator ([ OPERATOR ] LIST) combined with the numeric infix multiplication operator. (*)
It also shows that you can put --> UInt in the signature instead of returns ...
Reading a binary file with python
...t('num_groups', 4) # Bytes 9-12
f.skip(8) # Bytes 13-20
for i in range(num_particles):
f.struct('group_ids', '>f') # 4 bytes x num_particles
f.skip(4)
with open('myfile.bin', 'rb') as fh:
result = binaryfile.read(fh, particle_file)
print(result)
Which produces an outp...
Calculate the number of business days between two dates?
...ference = (int)to.Subtract(from).TotalDays;
return Enumerable
.Range(1, dayDifference)
.Select(x => from.AddDays(x))
.Count(x => x.DayOfWeek != DayOfWeek.Saturday && x.DayOfWeek != DayOfWeek.Sunday);
}
This was my original submission:
public int GetWorkin...
Record file copy operation with Git
... Unlike the solution below, this doesn't work with change tracking in a range. Git log allows a range argument (git log -L123,456:file.xyz) that properly follows renames, but not copies, and you can't pass --follow in that case; also, AFAICT, this doesn't work with git blame.
...
What are the different usecases of PNG vs. GIF vs. JPEG vs. SVG?
....
PNG if straight lines as in a comic or other drawing or if a wide color range is needed with transparency(and IE6 is not a factor)
And as commented, if you are unsure of what would qualify, try each format with different compression ratios and weigh the quality and size of the picture and choos...