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What does LINQ return when the results are empty
... about LINQ query. Normally a query returns a IEnumerable<T> type. If the return is empty, not sure if it is null or not. I am not sure if the following ToList() will throw an exception or just a empty List<string> if nothing found in IEnumerable result?
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jQuery - If element has class do this
I need an jQuery script that will see if any element has an specific class and do an action like change position.
1 Answer
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Bash syntax error: unexpected end of file
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If you can Edit your bash file with Notepad++. Go to Edit-> EOL Conversion-> Macintosh(CR). Change it to Macintosh(CR) even if you are using Windows OS.
– Juniar
Jul 28 '17 at 13:5...
How to upload files to server using JSP/Servlet?
...TML <input type="file"> field in the form. As stated in the HTML specification you have to use the POST method and the enctype attribute of the form has to be set to "multipart/form-data".
<form action="upload" method="post" enctype="multipart/form-data">
<input type="text" name=...
count vs length vs size in a collection
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Size() tends to refer to the size of the collection, often this can be different from the length in cases like vectors (or strings), there may be 10 characters in a string, but storage is reserved for 20. It also may refer to number of elements - check source/documentation.
Capacity() - used to ...
Erasing elements from a vector
...in), vec.end());
What happens is that remove compacts the elements that differ from the value to be removed (number_in) in the beginning of the vector and returns the iterator to the first element after that range. Then erase removes these elements (whose value is unspecified).
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When to use the brace-enclosed initializer?
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I think the following could be a good guideline:
If the (single) value you are initializing with is intended to be the exact value of the object, use copy (=) initialization (because then in case of error, you'll never accidentally invoke an explicit constructor, which gene...
How can I trigger an onchange event manually? [duplicate]
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There's a couple of ways you can do this. If the onchange listener is a function set via the element.onchange property and you're not bothered about the event object or bubbling/propagation, the easiest method is to just call that function:
element.onchange();
If ...
So, JSONP or CORS? [closed]
...it on google regarding the two, but I think I can hit a few key points.
If you need a read-only ajax interface to your servers and you need to support IE<=9, Opera<12, or Firefox<3.5 or various other older or obscure browsers, CORS is out, use JSONP. IE8 and IE9 sorta support CORS but ...
How to load local script files as fallback in cases where CDN are blocked/unavailable? [duplicate]
...ded you can check for existence any variable/function this script defines, if it is undefined - then cdn failed and you need to load local script copy.
On this principle are based solutions like that:
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js"></script>
&l...