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A fast method to round a double to a 32-bit int explained
...ly the integers
This follows from the fact that the mantissa is 52 bits wide.
The other interesting fact about adding 251+252 is that it affects the mantissa only in the two highest bits - which are discarded anyway, since we are taking only its lowest 32 bits.
Last but not least: the sign.
I...
Logback to log different messages to two files
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How do I create directory if it doesn't exist to create a file?
...ions/9065598, but I wanted to start with the absolute path to a file, and didn't want to deal with splitting the path. Now I know that you can access the Directory from the FileInfo instance.
– Johann
Jan 23 '19 at 22:04
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Why are trailing commas allowed in a list?
I am curious why in Python a trailing comma in a list is valid syntax, and it seems that Python simply ignores it:
5 Answer...
Multiple aggregations of the same column using pandas GroupBy.agg()
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It has already been said, but using dictionaries for renaming output columns from age is deprecated. You can instead specify a list of tuples. See this answer.
– cs95
Jan 22 '19 at 1:53
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What Regex would capture everything from ' mark to the end of a line?
...'.*
is technically correct, however it is clearer to be specific and avoid confusion for later code maintenance, hence my use of the $. It is my belief that it is always better to declare explicit behaviour than rely on implicit behaviour in situations where clarity could be questioned.
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Checking if an instance's class implements an interface?
...f each approach:
Given an instance of an object
Object construction outside the loop (100,000 iterations)
____________________________________________
| class_implements | Reflection | instanceOf |
|------------------|------------|------------|
| 140 ms | 290 ms | 35 ms |
'---...
Set “this” variable easily?
...except that I can't figure out a nice way to set the "this" variable. Consider:
5 Answers
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Responsive iframe using Bootstrap
...div>
Option 2
If you don't want to wrap your iframes, you can use FluidVids https://github.com/toddmotto/fluidvids. See demo here: http://toddmotto.com/labs/fluidvids/
<!-- fluidvids.js -->
<script src="js/fluidvids.js"></script>
<script>
fluidvids.init(...
What does “1 line adds whitespace errors” mean when applying a patch?
...y programmers tend to care about. As the manual explains:
What are considered whitespace errors is controlled
by core.whitespace configuration. By default, trailing whitespaces
(including lines that solely consist of whitespaces) and a space
character that is immediately followed by a tab ...