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Understanding the Gemfile.lock file
...lot whilst building an automated dependency update tool1. The below is far from definitive, but it's a good starting point for understanding the Gemfile.lock format. You might also want to check out the source code for Bundler's lockfile parser.
You'll find the following headings in a lockfile gene...
Java 8 stream reverse order
...reverse IntStream, try something like this:
static IntStream revRange(int from, int to) {
return IntStream.range(from, to)
.map(i -> to - i + from - 1);
}
This avoids boxing and sorting.
For the general question of how to reverse a stream of any type, I don't know of t...
Spring Boot - inject map from application.yml
...g Boot application with the following application.yml - taken basically from here :
7 Answers
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How to calculate cumulative normal distribution?
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Here's an example:
>>> from scipy.stats import norm
>>> norm.cdf(1.96)
0.9750021048517795
>>> norm.cdf(-1.96)
0.024997895148220435
In other words, approximately 95% of the standard normal interval lies within two standard deviat...
When to use Amazon Cloudfront or S3
...your content. (Amazon)
The data served by CloudFront may or may not come from S3. Since it is more optimized for delivery speed, the bandwidth costs a little more.
If your user base is localized, you won't see too much difference working with S3 or CloudFront (but you have to choose the right loc...
getting date format m-d-Y H:i:s.u from milliseconds
I am trying to get a formatted date, including the microseconds from milliseconds.
15 Answers
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Import a module from a relative path
... several products and works in many special scenarios like: scripts called from another directory or executed with python execute instead of opening a new interpreter.
import os, sys, inspect
# realpath() will make your script run, even if you symlink it :)
cmd_folder = os.path.realpath(os.path....
Why are variables “i” and “j” used for counters?
...
It comes ultimately from mathematics: the summation notation traditionally uses i for the first index, j for the second, and so on. Example (from http://en.wikipedia.org/wiki/Summation):
It's also used that way for collections of things,...
Python circular importing?
....
The easiest way to do so is to use import my_module syntax, rather than from my_module import some_object. The former will almost always work, even if my_module included imports us back. The latter only works if my_object is already defined in my_module, which in a circular import may not be the ...
Array slices in C#
...o = new byte[4096];
var bar = foo.Take(41);
If you really need an array from any IEnumerable<byte> value, you could use the ToArray() method for that. That does not seem to be the case here.
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