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Remove rows with all or some NAs (missing values) in data.frame
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16 Answers
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How to extract public key using OpenSSL?
The following command generates a file which contains both public and private key:
5 Answers
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how to check if List element contains an item with a Particular Property Value
How to check if element of pricePublicList contains certain value. To be more precise, I want to check if there exists pricePublicModel.Size == 200 ? Also, if this element exists, how to know which one it is?
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When to delete branches in Git?
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You can safely remove a branch with git branch -d yourbranch. If it contains unmerged changes (ie, you would lose commits by deleting the branch), git will tell you and won't delete it.
So, deleting a merged branch is cheap and won't ...
Shortcut to exit scale mode in VirtualBox [closed]
...e, press:
Right Ctrl (Host Key) + c
Note that your (Host Key) may be different from Right Ctrl. To check the current binding, go to VirtualBox Preferences > Input > Virtual Machine > Host Key Combination.
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Error: The 'brew link' step did not complete successfully
I'm trying to install node.js via Homebrew. Unfortunately, I get this error:
21 Answers
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do N times (declarative syntax)
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This answer is based on Array.forEach, without any library, just native vanilla.
To basically call something() 3 times, use:
[1,2,3].forEach(function(i) {
something();
});
considering the following function:
function something(){ console.log('somet...
Where/How to getIntent().getExtras() in an Android Fragment? [duplicate]
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What I tend to do, and I believe this is what Google intended for developers to do too, is to still get the extras from an Intent in an Activity and then pass any extra data to fragments by instantiating them with arguments.
There's actually an example on the Android dev blog that illu...
How to serialize an object into a string
...able to serialize an object into a file and then restore it again as is shown in the next code snippet. I would like to serialize the object into a string and store into a database instead. Can anyone help me?
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How to get a JavaScript object's class?
I created a JavaScript object, but how I can determine the class of that object?
18 Answers
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