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Pure JavaScript: a function like jQuery's isNumeric() [duplicate]
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@Matt My comment was aimed at the comment and the note in the answer stating parseInt was the wrong way of doing this (then going ahead and using parseFloat, which doesn't really seem different). Interestingly isFinite will get you the result you're after in almost a...
Convert Newtonsoft.Json.Linq.JArray to a list of specific object type
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So how to handle if the array has a null field? This time i get the error JsonSerializationException. I want the data and i want it remain null for any null data.
– Ensar Turkoglu
Apr 19 '17 at 11:...
Postgresql GROUP_CONCAT equivalent?
I have a table and I'd like to pull one row per id with field values concatenated.
7 Answers
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Submitting HTML form using Jquery AJAX
...using AJAX.
Really quickly there are 4 general web actions GET, POST, PUT, and DELETE; these directly correspond with SELECT/Retreiving DATA, INSERTING DATA, UPDATING/UPSERTING DATA, and DELETING DATA. A default HTML/ASP.Net webform/PHP/Python or any other form action is to "submit" which is a POST...
Why does substring slicing with index out of range work?
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You're correct! 'example'[3:4] and 'example'[3] are fundamentally different, and slicing outside the bounds of a sequence (at least for built-ins) doesn't cause an error.
It might be surprising at first, but it makes sense when you think about it. Indexi...
How can I change CSS display none or block property using jQuery?
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The correct way to do this is to use show and hide:
$('#id').hide();
$('#id').show();
An alternate way is to use the jQuery css method:
$("#id").css("display", "none");
$("#id").css("display", "block");
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When do Java generics require
...rializable.
One thing to check -- are you sure you want Class<Date> and not Date? A map of String to Class<Date> doesn't sound terribly useful in general (all it can hold is Date.class as values rather than instances of Date)
As for genericizing assertThat, the idea is that the method ...
Authenticate with GitHub using a token
...ticate ( https://help.github.com/articles/creating-an-access-token-for-command-line-use ). I have tried this, but I still cannot push to GitHub. Please note, I am trying to push from an unauthenticated server (Travis-CI).
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How to determine a user's IP address in node
... this call:
request.connection.remoteAddress
See documentation for http and net
EDIT
As @juand points out in the comments, the correct method to get the remote IP, if the server is behind a proxy, is request.headers['x-forwarded-for']
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Is it possible to GROUP BY multiple columns using MySQL?
...erence of left to right is applied to the ascending order of the groupings and not the column group preference. GROUP BY applies col1+col2. e.g. col1 = 1, 2, 1, 2 | col2 = 1, 2, 3, 2 and running GROUP BY col1,col2 would return 1,1|1,3|2,2 as opposed to 1,1|2,2 as suggested. Whereas GROUP BY col2, co...