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Numpy where function multiple conditions
I have an array of distances called dists. I want to select dists which are between two values. I wrote the following line of code to do that:
...
How do I find duplicates across multiple columns?
...simple and efficient means to locate unwanted repetition, whilst also list all affected rows and all wanted columns:
SELECT
t.*
FROM (
SELECT
s.*
, COUNT(*) OVER (PARTITION BY s.name, s.city) AS qty
FROM stuff s
) t
WHERE t.qty > 1
ORDER BY t.name, t.city
While most...
“Treat all warnings as errors except…” in Visual Studio
...rs" exists. It should be available in project settings without to edit manually the file. Thanks.
– AFract
Oct 23 '18 at 9:03
1
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How to disable XDebug
I think that my server became slow since I installed XDebug.
So, in order to test my hypothesis I want to disable XDebug completely.
I've been searching for tutorials on how to do this but I can't find such information.
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Collisions when generating UUIDs in JavaScript?
...rom Math.random(). For some browsers the entropy is as low as just 41 bits all together. Calling Math.random() multiple times won't raise the entropy. If you really want unique v4 UUIDs you need to use a cryptographically strong RNG that produces at least 122bit entropy per UUID generated.
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How to get milliseconds from LocalDateTime in Java 8
...
Sure, if all you need is seconds, not milliseconds.
– Stuart Marks
May 30 '14 at 17:23
1
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Placement of the ng-app directive (html vs body)
...nce where you put ng-app.
If you put it on <body> then you have a smaller scope for AngularJS which is slightly faster.
But I have used ng-app on the <html> for manipulating the <title>.
share
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Why are these constructs using pre and post-increment undefined behavior?
... concept of undefined behavior, i.e. some language constructs are syntactically valid but you can't predict the behavior when the code is run.
As far as I know, the standard doesn't explicitly say why the concept of undefined behavior exists. In my mind, it's simply because the language designers w...
How to prevent Node.js from exiting while waiting for a callback?
...
Callback is Not Queued
Node runs until all event queues are empty. A callback is added to an event queue when a call such as
emmiter1.on('this_event',callback).
has executed. This call is part of the code written by th...
Xcode 6 / Beta 4: using bridging headers with framework targets is unsupported
...
As the error states, bridging headers are not allowed in Frameworks. The Importing Code from Within the Same Framework Target section of the Mix & Match apple documentation hints at this. As they say, you need to "In your umbrella header file, import every Objective-...