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When is JavaScript synchronous?
...
JavaScript is always synchronous and single-threaded. If you're executing a JavaScript block of code on a page then no other JavaScript on that page will currently be executed.
JavaScript is only asynchronous in the sense that it can make, for example, Ajax calls. The A...
How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null / throw
... So it's needless to specify them in such case.
Also note that you should read the file contents immediately inside the abovementioned methods and not in a different bean method invoked by a later HTTP request. This is because the uploaded file contents is request scoped and thus unavailable in a l...
No ConcurrentList in .Net 4.0?
...oing to get a full implementation of IList<T> that is lockless and thread-safe. In particular, random insertions and removals are not going to work, unless you also forget about O(1) random access (i.e., unless you "cheat" and just use some sort of linked list and let the indexing suck).
What...
Calling clojure from java
...h a clear explanation of how to call Clojure from Java assuming you have already built a jar from the Clojure project and included it in the classpath?
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When should I use semicolons in SQL Server?
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@maurocam I think you've read the document incorrectly. If you look at that link it says "Not ending Transact-SQL statements with a semicolon." is deprecated.
– Caltor
Nov 6 '17 at 15:10
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Initialize a byte array to a certain value, other than the default null? [duplicate]
...x20, 0x20 };
For larger arrays use a standard for loop. This is the most readable and efficient way to do it:
var sevenThousandItems = new byte[7000];
for (int i = 0; i < sevenThousandItems.Length; i++)
{
sevenThousandItems[i] = 0x20;
}
Of course, if you need to do this a lot then you co...
How to split() a delimited string to a List
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This will read a csv file and it includes a csv line splitter that handles double quotes and it can read even if excel has it open.
public List<Dictionary<string, string>> LoadCsvAsDictionary(string path)
{
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Copy a file in a sane, safe and efficient way
...ry);
dst << src.rdbuf();
}
This is so simple and intuitive to read it is worth the extra cost. If we were doing it a lot, better to fall back on OS calls to the file system. I am sure boost has a copy file method in its filesystem class.
There is a C method for interacting with the fi...
Get domain name from given url
...e a complex grammar. If you try to roll your own parser without carefully reading RFC 3986, you will probably get it wrong. Just use the one that's built into the core libraries.
If you really need to deal with messy inputs that java.net.URI rejects, see RFC 3986 Appendix B:
Appendix B. Pars...
Generating an Excel file in ASP.NET [closed]
...blem nowadays)
Complicated unless you're using a third party component
SpreadSheetML (open format XML)
Pros:
Simple compared to native Excel formats
Supports most Excel features: formating, styles, formulas, multiple sheets per workbook
Excel does not need to be installed to use it
No third pa...