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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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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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How to use a WSDL
... of the defined methods on the WSDL contract.
Instantiate the client and call the methods you want to call - that's all there is!
YourServiceClient client = new YourServiceClient();
client.SayHello("World!");
If you need to specify the remote URL (not using the one created by default), you can e...
std::vector versus std::array in C++
... should one be preferred over another? What are the pros and cons of each? All my textbook does is list how they are the same.
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Set up git to pull and push all branches
I'd like to push and pull all the branches by default, including the newly created ones.
8 Answers
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Remove blank lines with grep
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Try the following:
grep -v -e '^$' foo.txt
The -e option allows regex patterns for matching.
The single quotes around ^$ makes it work for Cshell. Other shells will be happy with either single or double quotes.
UPDATE: This works for me for a file with blank lines or "all white ...