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Reorder levels of a factor without changing order of values
I have data frame with some numerical variables and some categorical factor variables. The order of levels for those factors is not the way I want them to be.
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How do I prevent Android taking a screenshot when my app goes to the background?
The app I'm currently building has the requirement that the app has to prevent the OS to take a screenshot of the app when it's being pushed into the background for security reasons. This way it won't be able to see the last active screen when switching between apps.
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Handling optional parameters in javascript
I have a static javascript function that can take 1, 2 or 3 parameters:
12 Answers
12
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How to send a header using a HTTP request through a curl call?
...Accept: application/json" -H "Content-Type: application/json" http://hostname/resource
with XML:
curl -H "Accept: application/xml" -H "Content-Type: application/xml" -X GET http://hostname/resource
POST:
For posting data:
curl --data "param1=value1&param2=value2" http://hostname/resource
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Enable remote connections for SQL Server Express 2012
I just installed SQL Server Express 2012 on my home server. I'm trying to connect to it from Visual Studio 2012 from my desktop PC, and repeatedly getting the well-known error:
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How to read and write excel file
...h 3 columns and N rows, printing one string in each cell. Can anyone give me simple code snippet for this? Do I need to use any external lib or does Java have built-in support for it?
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How to join two JavaScript Objects, without using JQUERY [duplicate]
I have two json objects obj1 and obj2, i want to merge them and crete a single json object.
The resultant json should have all the values from obj2 and the values from obj1 which is not present in obj2.
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Approximate cost to access various caches and main memory?
Can anyone give me the approximate time (in nanoseconds) to access L1, L2 and L3 caches, as well as main memory on Intel i7 processors?
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Among $_REQUEST, $_GET and $_POST which one is the fastest?
... other, but not both) : generally speaking :
You should use $_GET when someone is requesting data from your application.
And you should use $_POST when someone is pushing (inserting or updating ; or deleting) data to your application.
Either way, there will not be much of a difference about perf...
Jquery - How to make $.post() use contentType=application/json?
... to use
Or
3.You could overwrite the $.post function with your own implementation via monkey patching.
The JSON datatype in your example refers to the datatype returned from the server and not the format sent to the server.
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