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Check if table exists in SQL Server
...always best to use an INFORMATION_SCHEMA view. These views are (mostly) standard across many different databases and rarely change from version to version.
To check if a table exists use:
IF (EXISTS (SELECT *
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA = ...
What does it mean in shell when we put a command inside dollar sign and parentheses: $(command)
I just want to understand following line of code in shell. It is used to get the current working directory. I am aware that $(variable) name return the value inside the variable name, but what is $(command) supposed to return? Does it return the value after executing the command? In that case, w...
How to force garbage collection in Java?
...ollection in Java, even if it is tricky to do? I know about System.gc(); and Runtime.gc(); but they only suggest to do GC. How can I force GC?
...
C# declare empty string array
I need to declare an empty string array and i'm using this code
9 Answers
9
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What are “res” and “req” parameters in Express functions?
...mine what kind of browser made the request, what sort of responses it can handle, whether or not it's able to understand HTTP compression, etc.
An array of query string parameters if there were any, in request.query (e.g. /people.json?foo=bar would result in request.query.foo containing the string "...
OS detecting makefile
I routinely work on several different computers and several different operating systems, which are Mac OS X, Linux, or Solaris. For the project I'm working on, I pull my code from a remote git repository.
...
How do I mock an autowired @Value field in Spring with Mockito?
I'm using Spring 3.1.4.RELEASE and Mockito 1.9.5. In my Spring class I have:
7 Answers
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const vs constexpr on variables
... = 3.141592653589793;
constexpr double PI2 = 3.141592653589793;
Both PI1 and PI2 are constant, meaning you can not modify them. However only PI2 is a compile-time constant. It shall be initialized at compile time. PI1 may be initialized at compile time or run time. Furthermore, only PI2 can be...
Specify width in *characters*
...eight of an x. More generally speaking, these are the heights of uppercase and lowercase letters.
Width is a totally different issue....
Change your example above to
<div>
<span>1</span> 3 5 7 9 1 3 5 7 9 1
</div>
and you will notice width and height of the span are...
Difference between java.exe and javaw.exe
...re running on javaw (not in java ). What is the difference between them and how can I run my Swing application on javaw ?
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