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How to retrieve the hash for the current commit in Git?
...it rev-parse --verify HEAD
You can also retrieve the short version like this
git rev-parse --short HEAD
Sidenote: If you want to turn references (branches and tags) into SHA-1, there is git show-ref and git for-each-ref.
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Copy array by value
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Use this:
let oldArray = [1, 2, 3, 4, 5];
let newArray = oldArray.slice();
console.log({newArray});
Basically, the slice() operation clones the array and returns a reference to a new array.
Also note that:
For reference...
kill -3 to get java thread dump
...to see the JVM's thread dump in unix. But where can I find the output of this kill command? I am lost!!
9 Answers
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change cursor to finger pointer
I have this a and I don't know that I need to insert into the "onmouseover" so that the cursor will change to finger pointer like a regular link:
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How do you add swap to an EC2 instance?
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A fix for this problem is to add swap (i.e. paging) space to the instance.
Paging works by creating an area on your hard drive and using it for extra memory, this memory is much slower than normal memory however much more of it is avail...
Is there a link to GitHub for downloading a file in the latest release of a repository?
Using GitHub's Release feature , it is possible to provide a link to download a specific version of the published software. However, every time a release is made, the gh-page also needs to be updated.
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Using ConfigurationManager to load config from an arbitrary location
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Try this:
System.Configuration.ConfigurationFileMap fileMap = new ConfigurationFileMap(strConfigPath); //Path to your config file
System.Configuration.Configuration configuration = System.Configuration.ConfigurationManager.OpenMap...
Resize svg when window is resized in d3.js
I'm drawing a scatterplot with d3.js. With the help of this question :
Get the size of the screen, current web page and browser window
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How does Django's Meta class work?
...estion about two different things:
Meta inner class in Django models:
This is just a class container with some options (metadata) attached to the model. It defines such things as available permissions, associated database table name, whether the model is abstract or not, singular and plural versi...
Prevent double submission of forms in jQuery
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Update in 2018: I just got some points for this old answer, and just wanted to add that the best solution would be to make the operation idempotent so that duplicate submissions are harmless.
Eg, if the form creates an order, put a unique ID in the form. The first time ...