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Best way to check if a Data Table has a null value in it
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I usually create an "Extensions" folder in some common library or in my DAL. Create a file called "DataTableExtensions.cs" and add that method. Next you would just add "using Name.Space.Extensions" to your cs files and have access...
Java project in Eclipse: The type java.lang.Object cannot be resolved. It is indirectly referenced f
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In my case it occurred because i have accidentally removed the JRE while importing the project [my fault]. This gave me a clue to fix the issue.
– GayashanNA
Apr 22 '14 at 6:50
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When should I use malloc in C and when don't I?
I understand how malloc() works. My question is, I'll see things like this:
6 Answers
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How to escape apostrophe (') in MySql?
... is informative:
This controls whether a quote mark can be represented by \' in a string literal. The preferred, SQL-standard way to represent a quote mark is by doubling it ('') but PostgreSQL has historically also accepted \'. However, use of \' creates security risks...
That says to me that...
How do I install pip on macOS or OS X?
I spent most of the day yesterday searching for a clear answer for installing pip (package manager for Python). I can't find a good solution.
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How do I access named capturing groups in a .NET Regex?
...gex.IsMatch part.
I also moved the Regex definition outside the method in order to construct it just once (I think is the sensible approach if we are storing that the assembly with the RegexOptions.Compiled option).
private static Regex hrefRegex = new Regex("<td>\\s*<a\\s*href\\s*=\\s*(?...
What is the difference between precision and scale?
... significant digits.
Reference:
http://download.oracle.com/docs/cd/B28359_01/server.111/b28318/datatype.htm#CNCPT1832
That page also has some examples that will make you understand precision and scale.
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When to catch java.lang.Error?
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Very rarely.
I'd say only at the top level of a thread in order to ATTEMPT to issue a message with the reason for a thread dying.
If you are in a framework that does this sort of thing for you, leave it to the framework.
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How does generic lambda work in C++14?
...each occurrence of auto in the lambda’s parameter-declaration-clause, in order of appearance.
The invented type template-parameter is a parameter pack if the corresponding parameter-declaration declares
a function parameter pack (8.3.5). The return type and function parameters of the function ...
What is the difference between required and ng-required?
...equired" is a statement telling the browser that this field is required in order for the form to be valid. (required="required" is the XHTML form, just using required is equivalent)
The Angular attribute ng-required="yourCondition" means 'isRequired(yourCondition)' and sets the HTML attribute dynam...