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Is it possible to set a number to NaN or infinity?
... arange(3,dtype=float)
a[0] = np.nan
a[1] = np.inf
a[2] = -np.inf
a # is now [nan,inf,-inf]
np.isnan(a[0]) # True
np.isinf(a[1]) # True
np.isinf(a[2]) # True
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What's the difference between JPA and Spring Data JPA?
...am a bit confused about the difference between Spring Data-JPA and JPA. I know about JPA that it is a specification for persisting the Java Objects to a relational database using popular ORM technology.
...
How can I upgrade specific packages using pip and a requirements file?
... though with the --upgrade-strategy only-if-needed dependent packages will now only be upgraded as necessary.
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Calculate the execution time of a method
...sw.Stop();
Example results
132ms
4ms
3ms
3ms
2ms
3ms
34ms
2ms
1ms
1ms
Now you're wondering; "well why did it take 132ms the first time, and significantly less the rest of the time?"
The answer is that Stopwatch does not compensate for "background noise" activity in .NET, such as JITing. Theref...
Is there a label/goto in Python?
....
Granted, that isn't the best way to substitute for goto. But without knowing exactly what you're trying to do with the goto, it's hard to give specific advice.
@ascobol:
Your best bet is to either enclose it in a function or use an exception. For the function:
def loopfunc():
while 1:
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Why is the use of tuples in C++ not more common?
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I don't know the specifics of what you're seeing, but I'm guessing that the parts people are using like crazy are features they really, really wanted. Thus (again, guessing) the popularity of the hash map, the counted pointer, and th...
What is the difference between HAVING and WHERE in SQL?
...count for this, again an opportunity for improvement within the industry.
Now consider for a moment removing WHERE from the language. This time the majority of queries in existence would need to be rewritten without an obvious alternative construct. Coders would have to get creative e.g. inner join...
Add line break within tooltips
...>
It has worked in majority of the tooltip plugins i have tried as of now.
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Compare two DataFrames and output their differences side-by-side
...
df_final = df_all.swaplevel(axis='columns')[df.columns[1:]]
df_final
Now, its much easier to spot the differences in the frames. But, we can go further and use the style property to highlight the cells that are different. We define a custom function to do this which you can see in this part of...
Why was the arguments.callee.caller property deprecated in JavaScript?
...ifficult.
Eg. if we can't guarantee that a function f will not call an unknown function, then it is not possible to inline f. Basically it means that any call site that may have been trivially inlinable accumulates a large number of guards, take:
function f(a, b, c, d, e) { return a ? b * c : d *...