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Parallel.ForEach vs Task.Run and Task.WhenAll
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The first version will synchronously block the calling thread (and run some of the tasks on it).
If it's a UI thread, this will freeze the UI.
The second version will run the tasks asynchronously in the thread pool and release the calling thread until they're done.
There are also diffe...
What does = +_ mean in JavaScript
...page on Arithmetic Operators:
The unary plus operator precedes its operand and evaluates to its
operand but attempts to converts it into a number, if it isn't
already. [...] It can convert string representations of integers and
floats, as well as the non-string values true, false, and null...
Keyboard shortcuts in WPF
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One way is to add your shortcut keys to the commands themselves them as InputGestures. Commands are implemented as RoutedCommands.
This enables the shortcut keys to work even if they're not hooked up to any controls. And since menu items understand keyboard gestures, they'...
How to get GET (query string) variables in Express.js on Node.js?
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In Express it's already done for you and you can simply use req.query for that:
var id = req.query.id; // $_GET["id"]
Otherwise, in NodeJS, you can access req.url and the builtin url module to url.parse it manually:
var url = require('url');
var url_parts = url...
How to justify a single flexbox item (override justify-content)
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This technique is excellent and it also works in the vertical direction. For instance, you want the last element inside a fixed height container to stick to the bottom. You can use ``` .container { flex-direction: column; justify-conte...
Can I change all my http:// links to just //?
...lable to test against on Browsershots, I could only find one that did not handle the protocol relative URL correctly: an obscure *nix browser called Dillo.
There are two drawbacks I've received feedback about:
Protocol-less URLs may not work as expected when you "open" a local file in your browse...
What is the MySQL JDBC driver connection string?
I am new to JDBC and I am trying to make a connection to a MySQL database.
I am using Connector/J driver, but I cant find the JDBC connection string for my Class.forName() method.
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How to set layout_weight attribute dynamically from code?
How can I set the value for the attribute layout_weight for button in android dynamically from java code ?
9 Answers
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Generate GUID in MySQL for existing Data?
I've just imported a bunch of data to a MySQL table and I have a column "GUID" that I want to basically fill down all existing rows with new and unique random GUID's.
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Is there any way I can define a variable in LaTeX?
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add the following to you preamble:
\newcommand{\newCommandName}{text to insert}
Then you can just use \newCommandName{} in the text
For more info on \newcommand, see e.g. wikibooks
Example:
\documentclass{article}
\newcommand\x{30}
\begin{document}
\x
\end{docume...