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Check if table exists in SQL Server
I would like this to be the ultimate discussion on how to check if a table exists in SQL Server 2000/2005 using SQL Statements.
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if…else within JSP or JSTL
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Should I use JSTL ?
Yes.
You can use <c:if> and <c:choose> tags to make conditional rendering in jsp using JSTL.
To simulate if , you can use:
<c:if test="condition"></c:if>
To simulate if...else, you can use:
<c:choose>
<c:wh...
Create PostgreSQL ROLE (user) if it doesn't exist
...QL script to create a ROLE in PostgreSQL 9.1, but without raising an error if it already exists?
10 Answers
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C# Test if user has write access to a folder
I need to test if a user can write to a folder before actually attempting to do so.
18 Answers
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Best way to check for nullable bool in a condition expression (if …)
...d don't think about what they actually want :)
bool? nullableBool = true;
if (nullableBool == true) { ... } // true
else { ... } // false or null
Or if you want more options...
bool? nullableBool = true;
if (nullableBool == true) { ... } // true
else if (nullableBool == false) { ... } // false
e...
Fastest way to tell if two files have the same contents in Unix/Linux?
...e same data or not. I do this a for a lot of files, and in my script the diff command seems to be the performance bottleneck.
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Test if object implements interface
What is the simplest way of testing if an object implements a given interface in C#? (Answer to this question
in Java )
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How to check if any flags of a flag combination are set?
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If you want to know if letter has any of the letters in AB you must use the AND & operator. Something like:
if ((letter & Letters.AB) != 0)
{
// Some flag (A,B or both) is enabled
}
else
{
// None of them are...
How to check if a folder exists
...t this throws an exception when the folder does not exist, how can I check if the folder exists with the new IO?
10 Answer...
Why a function checking if a string is empty always returns true? [closed]
I have a function isNotEmpty which returns true if the string is not empty and false if the string is empty. I've found out that it is not working if I pass an empty string through it.
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