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Measuring function execution time in R
...ortant to know is that system.time() has an argument gcFirst which is TRUE by default. This on the one hand makes the measuring a bit more reproducible but can generate a significant overhead of total run time (which is not measured, off course).
– jakob-r
Oct ...
Remove a marker from a GoogleMap
...ddMarker (MarkerOptions options)
So when you add a marker to a GoogleMap by specifying the options for the marker, you should save the Marker object that is returned (instead of the MarkerOptions object that you used to create it). This object allows you to change the marker state later on. When...
Django: How to completely uninstall a Django app?
...r and a production system. This means I don't want to execute sql commands by hand. I want it to be automated.
Goal: Remove the app and all database tables.
Step 1: empty the app, but leave it installed
remove all files from the app, except the folder "migrations"
Execute this command: manage.py...
How can I convert this foreach code to Parallel.ForEach?
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Foreach loop:
Iterations takes place sequentially, one by one
foreach loop is run from a single Thread.
foreach loop is defined in every framework of .NET
Execution of slow processes can be slower, as they're run serially
Process 2 can't start until 1 is done. Proce...
Why can't I forward-declare a class in a namespace using double colons?
...of the best answers, because it answers why this can not easily determined by the compiler itself.
– Devolus
Jul 4 '19 at 12:12
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JPA OneToMany not deleting child
...Rooms go too.
Aggregation is a looser kind of association and is typified by Course and Student. Delete the Course and the Student still exists (probably in other Courses).
So you need to either use vendor-specific extensions to force this behaviour (if available) or explicitly delete the child AN...
How to see which flags -march=native will activate?
...amp;1 | grep cc1
If you want to see the compiler/precompiler defines set by certain parameters, do this:
echo | gcc -dM -E - -march=native
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In Git, what is the difference between origin/master vs origin master?
...:
git push origin master
More examples
You can fetch multiple branches by name...
git fetch origin master stable oldstable
You can merge multiple branches...
git merge origin/master hotfix-2275 hotfix-2276 hotfix-2290
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Can I stretch text using CSS?
...e.
The question asked for a way to prevent the boldness of the text caused by the stretch and I still haven't given one, BUT the font-weight property has more values than just normal and bold.
I know, you just can't see that, but if you search for the appropriate fonts, you can use the more values.
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Determine distance from the top of a div to top of window with javascript
...ventListener('scroll', function(ev) {
var someDiv = document.getElementById('someDiv');
var distanceToTop = someDiv.getBoundingClientRect().top;
console.log(distanceToTop);
});
Open your browser console and scroll your page to see the distance.
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