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Get the short Git version hash
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Try this:
git rev-parse --short HEAD
The command git rev-parse can do a remarkable number of different things, so you'd need to go through the documentation very carefully to spot that though.
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How do I get the parent directory in Python?
...is an entire RFC 1808 written to address the issue of relative path in URI and all the subtlety of the presence and absence of a trailing /. If you know of any documentation that says they should be treated equivalent in general please point it out.
– Wai Yip Tung
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SQL: How to properly check if a record exists
...optimize SELECT COUNT(*) anyway, so while there is a difference in theory (and older databases), you shouldn't notice any difference in practice.
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What is the canonical way to trim a string in Ruby without creating a new string?
...e.strip!
The #strip! method will return nil if it didn't strip anything, and the variable itself if it was stripped.
According to Ruby standards, a method suffixed with an exclamation mark changes the variable in place.
Hope this helps.
Update: This is output from irb to demonstrate:
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How do I prevent a parent's onclick event from firing when a child anchor is clicked?
I'm currently using jQuery to make a div clickable and in this div I also have anchors. The problem I'm running into is that when I click on an anchor both click events are firing (for the div and the anchor). How do I prevent the div's onclick event from firing when an anchor is clicked?
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Select count(*) from multiple tables
How can I select count(*) from two different tables (call them tab1 and tab2 ) having as result:
18 Answers
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Multiple commands on same line
I've been trying to find something that will let me run multiple commands on the same line in Vim, akin to using semicolons to separate commands in *nix systems or & in Windows. Is there a way to do this?
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CSS selector - element with a given child [duplicate]
... if it contains a specific child element?
Unfortunately not yet.
The CSS2 and CSS3 selector specifications do not allow for any sort of parent selection.
A Note About Specification Changes
This is a disclaimer about the accuracy of this post from this point onward. Parent selectors in CSS have bee...
The specified type member 'Date' is not supported in LINQ to Entities. Only initializers, entity mem
... mentioned in comments, in Entity Framework 6 EntityFunctions is obsolete, and you should use DbFunctions class, which is shipped with Entity Framework.
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What does PermGen actually stand for?
...n specific.
Briefly, it contains the Java objects associated with classes and interned strings. In Sun's client implementation with sharing on, classes.jsa is memory mapped to form the initial data, with about half read-only and half copy-on-write.
Java objects that are merely old are kept in the ...