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How do I set environment variables from Java?
How do I set environment variables from Java? I see that I can do this for subprocesses using ProcessBuilder . I have several subprocesses to start, though, so I'd rather modify the current process's environment and let the subprocesses inherit it.
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Is there a decorator to simply cache function return values?
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Starting from Python 3.2 there is a built-in decorator:
@functools.lru_cache(maxsize=100, typed=False)
Decorator to wrap a function with a memoizing callable that saves up to the maxsize most recent calls. It can save time when an expensive or I/O bound function is peri...
Java Timestamp - How can I create a Timestamp with the date 23/09/2007?
...ou mean java.sql.Timestamp. You will notice that this class has a constructor that accepts a long argument. You can parse this using the DateFormat class:
DateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy");
Date date = dateFormat.parse("23/09/2007");
long time = date.getTime();
new Timestam...
Recommended way to embed PDF in HTML?
...roach is to use the PDF.JS library. It's a pure HTML5/JavaScript renderer for PDF documents without any third-party plugins.
Online demo:
http://mozilla.github.com/pdf.js/web/viewer.html
GitHub:
https://github.com/mozilla/pdf.js
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Using curl POST with variables defined in bash script functions
...tion that generates the post data of your script. This saves you from all sort of headaches concerning shell quoting and makes it easier to read an maintain the script than feeding the post data on curl's invocation line as in your attempt:
generate_post_data()
{
cat <<EOF
{
"account": {
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JAX-RS / Jersey how to customize error handling?
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There are several approaches to customize the error handling behavior with JAX-RS. Here are three of the easier ways.
The first approach is to create an Exception class that extends WebApplicationException.
Example:
public class NotAuthorizedException extends WebApplica...
How do I handle newlines in JSON?
... and I'm trying to pull it into an object in JavaScript. I keep getting errors. Here's what I have:
10 Answers
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Why would anyone use set instead of unordered_set?
C++0x is introducing unordered_set which is available in boost and many other places. What I understand is that unordered_set is hash table with O(1) lookup complexity. On the other hand, set is nothing but a tree with log(n) lookup complexity. Why on earth would anyone use set instead ...
How do I rename an open file in Emacs?
... open file in Emacs? While I'm viewing it? Something like save-as, but the original one should go away.
10 Answers
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What are the mathematical/computational principles behind this game?
...ere are geometries with Q points, then Q = n^2 + n + 1 and n is called the order of the geometry.
There are n+1 points in every line.
From every point, pass exactly n+1 lines.
Total number of lines is also Q.
And finally, if n is prime, then there does exists a geometry of order n.
What does tha...