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How to show SQL queries run in the Rails console?
...raw query to explain and analyze. I guess will have to do with explain for now.
– abhishek77in
Jun 5 at 8:20
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How do you commit code as a different user?
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@Tim Henigan: It looks like documentation is now hosted on Github so the man page link you posted is dead. Can you confirm the new page is the same thing (in case there are other answers that need links updated)?
– R0MANARMY
Feb 6...
How to find out which JavaScript events fired?
...tion on the far right - double chevron)
Expand the event listeners option
Now you can see the events bound to the upvote
Not sure if it's quite as powerful as the firebug option, but has been enough for most of my stuff.
Another option that is a bit different but surprisingly awesome is Visual Ev...
Which data type for latitude and longitude?
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If you do not need all the functionality PostGIS offers, Postgres (nowadays) offers an extension module called earthdistance. It uses the point or cube data type depending on your accuracy needs for distance calculations.
You can now use the earth_box function to -for example- query for poi...
Control the size of points in an R scatterplot?
...mis-apply that rule then not only is your symbol size not changed, but you now have multiple parameters affecting text size (cex.axis, cex.lab, cex.main, and cex.sub--all do the same job as 'cex', only piece-wise). Code like that is difficult to maintain and extend.
– doug
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Should composer.lock be committed to version control?
...ession for your dependency management system as the dependency version has now gone back to being implicitly defined.
Also, your project should never have to be rebuilt or have its dependencies reacquired in each environment, especially prod. Your deliverable (tar, zip, phar, a directory, etc) shou...
.gitignore file, where should I put it in my xcode project?
...ory and activate it:
git config --global core.excludesfile ~/.gitignore
Now you can put whatever files are generated by your development tools into your .gitignore file.
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How to open a web server port on EC2 instance
... @Noitidart Save is what he means. But I am sure you figured that out by now :)
– mattdevio
Oct 26 '18 at 7:31
Thank...
Why is lazy evaluation useful?
...ort (filter (< x) xs) ++ [x] ++ quickSort (filter (>= x) xs)
If we now want to find the minimum of the list, we can define
minimum ls = head (quickSort ls)
Which first sorts the list and then takes the first element of the list. However, because of lazy evaluation, only the head gets comp...
How to read XML using XPath in Java
...ith this code:
expr.evaluate(doc, XPathConstants.STRING);
If you don't know how many URLs are in a given node, then you should rather do something like this:
XPathExpression expr = xpath.compile("/howto/topic[@name='PowerBuilder']/url");
NodeList nl = (NodeList) expr.evaluate(doc, XPathConstants...