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What is the difference between char, nchar, varchar, and nvarchar in SQL Server?
...人民共和国',N'中华人民共和国'),
(N'abc',N'abc');
SELECT C1,
C2,
LEN(C1) AS [LEN(C1)],
DATALENGTH(C1) AS [DATALENGTH(C1)],
LEN(C2) AS [LEN(C2)],
DATALENGTH(C2) AS [DATALENGTH(C2)]
FROM @T
Returns
Note that the 华 and ...
How to achieve function overloading in C?
...neric gets the overall type of the expression and then "switches" on it to select the end result expression in the list for its type:
_Generic(1, float: 2.0,
char *: "2",
int: 2,
default: get_two_object());
The above expression evaluates to 2 - the type of the ...
Should each and every table have a primary key?
...
Just add it, you will be sorry later when you didn't (selecting, deleting. linking, etc)
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What’s the best RESTful method to return total number of items in an object?
...ich may make sense in some use cases (e.g. /books/231/pages/52. I ended up selecting a wild range of frequently used request parameters such as pagesize, page[size] and limit etc in addition to supporting the Range header (and as request parameter as well).
...
Xcode: issue “file xxx.png is missing from working copy” at project building
...te worked for me. When I added some new images, I actually had to manually select "add" on the 2x/3x variants in the File Inspector pane as well. Weird.
– Android3000
Mar 24 '16 at 17:22
...
Using WebAPI or MVC to return JSON in ASP.NET
...Javascript calls.
For example:
You have a JQuery UI Datepicker that upon selection generates a list of radio buttons that represent events on the chosen day.
In this scenario, you could use WebApi to return some JSON and then generate the necessary HTML using Javascript but generally it's bad pra...
Eclipse - no Java (JRE) / (JDK) … no virtual machine
...e button Environment Variables, in the System Variables list at the bottom select Path (no, not Classpath), click Edit and add ;c:\path\to\jdk\bin to the end of the value.
Alternatively and if not present, you can also add JAVA_HOME environment variable and make use of it in the PATH. In the same d...
Sqlite primary key on multiple columns
...);
sqlite> insert into something (value) VALUES ('bla-bla');
sqlite> select * from something;
NULL|NULL|bla-bla
NULL|NULL|bla-bla
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How to force garbage collector to run?
...et Framework does this automatically but just in case.
First, make sure to select what you want to erase, and then call the garbage collector:
randomClass object1 = new randomClass
...
...
// Give a null value to the code you want to delete
object1 = null;
// Then call the garbage collector to eras...
How can I profile C++ code running on Linux?
... Another nice introduction to perf exists at archive.li/9r927#selection-767.126-767.271 (Why the SO gods decided to delete that page from the SO knowledge base is beyond me....)
– ragerdl