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How do I find Waldo with Mathematica?
... over the weekend: What is a good way to solve those Where's Waldo? [ 'Wally' outside of North America] puzzles, using Mathematica (image-processing and other functionality)?
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Cleaning `Inf` values from an R dataframe
...ption 1
Use the fact that a data.frame is a list of columns, then use do.call to recreate a data.frame.
do.call(data.frame,lapply(DT, function(x) replace(x, is.infinite(x),NA)))
Option 2 -- data.table
You could use data.table and set. This avoids some internal copying.
DT <- data.table(dat)...
Run PHP Task Asynchronously
...egistration' button, I don't want to make them wait until the email is actually sent, I just want to start the process, and return a message to the user right away.
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Grabbing the href attribute of an A element
...ml($node), PHP_EOL;
}
The above would find and output the "outerHTML" of all A elements in the $html string.
To get all the text values of the node, you do
echo $node->nodeValue;
To check if the href attribute exists you can do
echo $node->hasAttribute( 'href' );
To get the href att...
Django - limiting query results
...s are lazy. That means a query will hit the database only when you specifically ask for the result.
So until you print or actually use the result of a query you can filter further with no database access.
As you can see below your code only executes one sql query to fetch only the last 10 items.
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How exactly do Django content types work?
I'm really having a difficult time grasping the concept of Django's content types. It feels very hackish and, ultimately, against how Python tends to do things. That being said, if I'm going to use Django then I have to work within the confines of the framework.
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HttpSecurity, WebSecurity and AuthenticationManagerBuilder
...icationManagerBuilder) is used to establish an authentication mechanism by allowing AuthenticationProviders to be added easily: e.g. The following defines the in-memory authentication with the in-built 'user' and 'admin' logins.
public void configure(AuthenticationManagerBuilder auth) {
auth
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disable maven download progress indication
...--no-transfer-progress will suppress the output of downloading messages at all without suppressing the other output.
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When should I use std::thread::detach?
... completes. This is easy to understand, but what's the difference between calling detach() and not calling it?
5 Answers
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Change the color of glyphicons to blue in some- but not at all places using Bootstrap 2
...for my UI. I want to change the color of my glyphicons to blue, but not in all places. In some places it should use the default color.
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