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Rails :include vs. :joins
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.joins will just joins the tables and brings selected fields in return. if you call associations on joins query result, it will fire database queries again
:includes will eager load the included associations and add them in memory. :includes loads all the included tables attributes. If you call ...
How do I exclude all instances of a transitive dependency when using Gradle?
...understand translates to group:name:version in Gradle. But then, how do I know what module (in gradle-speak) a particular Maven artifact belongs to?
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Maven2: Best practice for Enterprise Project (EAR file)
... of archetypes appeared in a numbered list from which to select (519 as of now!). The goal, still running, prompted me to make a selection by entering a number or entering a search string e.g.:
513: remote -> org.xwiki.commons:xwiki-commons-component-archetype
514: remote -> org.xwiki.render...
How to initialize an array's length in JavaScript?
...(function () {}) gives you an array with length 5 and undefined as values, now it can be iterated over.
Array.apply(null, Array(5)).map(function (x, i) { return i; }) gives you an array with length 5 and values 0,1,2,3,4.
Array(5).forEach(alert) does nothing, Array.apply(null, Array(5)).forEach(aler...
Find what filetype is loaded in vim
...laying this filetype= at the bottom of your console, meaning vim does not know the file type. This is only halfway of your quest.
Logically, your next step will be telling vim "just highlight it using (for example) ps1 syntax". You do so by typing :set filetype=ps1, now vim will highlight the curre...
How to identify server IP address in PHP
How can I identify the server IP address in PHP?
15 Answers
15
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Perl flags -pe, -pi, -p, -w, -d, -i, -t?
I have seen lots of ways of running Perl code or scripts, with different flags. However, when I try to google for what each flag means, I mainly get results to generic Perl sites and no specific information regarding the flags or their use is found there.
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Convert string to symbol-able in ruby
...from string to symbol), and .to_s can convert (from symbol to string). and if you are dealing with an array consider .map(&:to_sym) or .map(&to_s) to convert all elements.
– jasonleonhard
Nov 5 '15 at 22:22
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Accessing Session Using ASP.NET Web API
...n.GetString("keyname");
return Ok(sessionData);
}
you should now be able to hit:
http://localhost:1234/api/session/set/thisissomedata
and then going to this URL will pull it out:
http://localhost:1234/api/session/get
Plenty more info on accessing session data within dot net core ...
How to remove array element in mongodb?
...from an existing array all instances of a value or values that match a specified condition.
Collection.update({
_id: parentDocumentId
}, {
$pull: {
subDocument: {
_id: SubDocumentId
}
}
});
This will find your parent document against given ID and then will remo...