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How to select the first element with a specific attribute using XPath
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Use:
(/bookstore/book[@location='US'])[1]
This will first get the book elements with the location attribute equal to 'US'. Then it will select the first node from that set. Note the use of parentheses, which are required by some implementations.
Note, this is not the...
How do I restart nginx only after the configuration test was successful on Ubuntu?
...ashes when a nginx configuration file has errors. On a multi-site server this puts down all the sites, even the ones without configuration errors.
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What regex will match every character except comma ',' or semi-colon ';'?
Is it possible to define a regex which will match every character except a certain defined character or set of characters?
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Optional query string parameters in ASP.NET Web API
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This issue has been fixed in the regular release of MVC4.
Now you can do:
public string GetFindBooks(string author="", string title="", string isbn="", string somethingelse="", DateTime? date= null)
{
// ...
}
and ever...
updating table rows in postgres using subquery
Using postgres 8.4, My goal is to update existing table:
6 Answers
6
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How to link a folder with an existing Heroku app
I have an existing Rails app on GitHub and deployed on Heroku. I'm trying to set up a new development machine and have cloned the project from my GitHub repository. However, I'm confused as to how to link this folder up to Heroku. Originally, I used the heroku create command, but obviously I don't...
Open soft keyboard programmatically
...ve an activity with no child widgets for it and the corresponding xml file is,
23 Answers
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Track all remote git branches as local branches
Tracking a single remote branch as a local branch is straightforward enough.
15 Answers
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Maximum Year in Expiry Date of Credit Card
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There is no official guideline as the credit card issuers can choose each when the cards they issue will expire. In fact they have been issuing cards for longer and longer periods of time. If you're trying to determine how far out ...
How can you diff two pipelines in Bash?
...nux system. Or for more details on exactly what system calls bash uses, this command on a Linux system will trace file and file-descriptor system calls
strace -f -efile,desc,clone,execve bash -c '/bin/true | diff -u - <(/bin/true)'
Without bash, you could make a named pipe. Use - to tell d...