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Different types of thread-safe Sets in Java
...er accesses which are running at this time continue with the old array, avoiding necessity of synchronization between readers and writers (though writing itself needs to be synchronized). The normally fast set operations (especially contains()) are quite slow here, as the arrays will be searched in ...
How to pass the values from one activity to previous activity
...nt resultIntent = new Intent();
resultIntent.putExtra(PUBLIC_STATIC_STRING_IDENTIFIER, enteredTextValue);
setResult(Activity.RESULT_OK, resultIntent);
finish();
The final step is in the calling Activity: Override onActivityResult to listen for callbacks from the text entry Activity. Get the extra ...
Bare asterisk in function arguments?
...f a name means "but I won't accept them at all, because I chose not to provide a place to put them".
– ShadowRanger
Jan 17 at 2:22
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Convert columns to string in Pandas
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One way to convert to string is to use astype:
total_rows['ColumnID'] = total_rows['ColumnID'].astype(str)
However, perhaps you are looking for the to_json function, which will convert keys to valid json (and therefore your keys to strings):
In [11]: df = pd.DataFrame([['A', 2], ['A', 4...
How does Django's Meta class work?
...ted May 7 '18 at 23:21
theUtherSide
2,58833 gold badges2727 silver badges3232 bronze badges
answered Aug 8 '13 at 4:23
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How to increment a pointer address and pointer's value?
... edited Mar 12 '18 at 15:52
Zaid Khan
67222 gold badges88 silver badges2121 bronze badges
answered Nov 21 '11 at 6:34
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What would cause an algorithm to have O(log log n) complexity?
...of a problem that yields runtimes of the form O(log log n). Instead of dividing the input in half at each layer, what happens if we take the square root of the size at each layer?
For example, let's take the number 65,536. How many times do we have to divide this by 2 until we get down to 1? If w...
How to get different colored lines for different plots in a single figure?
I am using matplotlib to create the plots. I have to identify each plot with a different color which should be automatically generated by Python.
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Is null reference possible?
Is this piece of code valid (and defined behavior)?
4 Answers
4
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What’s the difference between ScalaTest and Scala Specs unit test frameworks?
...Driven Development (BDD), whereas ScalaTest is more general. ScalaTest provides traits that you can mix together to get the behavior you prefer in your test classes, including BDD, and you can also easily define your own behavior if you want something different.
ScalaTest supports BDD through its S...