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Non-static method requires a target
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I face this error on testing WebAPI in Postman tool.
After building the code, If we remove any line (For Example: In my case when I remove one Commented line this error was occur...) in debugging mode then
the "Non-static method requires a targe...
Remap values in pandas column with a dict
...f = pd.DataFrame({ 'col1': np.random.choice( range(1,9), 100000 ) })
and testing with %timeit, it appears that map is approximately 10x faster than replace.
Note that your speedup with map will vary with your data. The largest speedup appears to be with large dictionaries and exhaustive replac...
How do I create a custom Error in JavaScript?
...it returns a new Error instance rather than initializing the this object.
Testing with the following code seems to demonstrate that this is in fact what's happening:
function NotImplementedError() {
var returned = Error.apply(this, arguments);
console.log("returned.message = '" + returned.m...
Algorithm for Determining Tic Tac Toe Game Over
...gonals = 4*n + 4 integers = 4(n+1) integers
Exercise: Can you see how to test for a draw in O(1) time per-move? If so, you can end the game early on a draw.
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String replacement in batch file
... That you need to put the code into batch file for it to work. If you just test it in command line, it will return unexpected %"jump over the "word%%%. Just be aware, that code in batch files and in command line may produce different results.
– dadhi
Apr 23 '14...
How to Deal with Temporary NSManagedObject instances?
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Thanks for suggesting this! I wrote a demo testing this method versus using a nil context and at least on OSX, this worked while inserting a nil context lost its attributes when saving - demo at github.com/seltzered/CoreDataMagicalRecordTempObjectsDemo
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How do I manage MongoDB connections in a Node.js web application?
...ch provides two benefits. Firstly it keeps your code modular and easier to test. Secondly your not forced to mix your database connection up in your request object which is NOT the place for a database connection object. (Given the nature of JavaScript I would consider it highly dangerous to mix in ...
How to retrieve a user environment variable in CMake (Windows)
...eck the contents, and I don't know if it would. But it certainly works for testing if it is defined or not!
– Janus Troelsen
Dec 10 '11 at 1:22
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Executing periodic actions in Python [duplicate]
... One thing to watch out for here is start time "drift". I just ran a test and my times drifted by +0.05s in about 33 iterations. I was running 1 second polls, and this means a drift of 20% in less than a minute. You can reduce drift by calling the threading.Timer at the start of the function r...
What is the best method to merge two PHP objects?
...j1, (array) $obj2);
This actually also works when objects have methods. (tested with PHP 5.3 and 5.6)
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