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SQL Data Reader - handling Null column values
...
You need to check for IsDBNull:
if(!SqlReader.IsDBNull(indexFirstName))
{
employee.FirstName = sqlreader.GetString(indexFirstName);
}
That's your only reliable way to detect and handle this situation.
I wrapped those things into extension methods and tend to return a default...
ES6 class variable alternatives
...is syntax working.
The notes in the ES wiki for the proposal in ES6 (maximally minimal classes) note:
There is (intentionally) no direct declarative way to define either prototype data properties (other than methods) class properties, or instance property
Class properties and prototype data proper...
jQuery parent of a parent
...ncestors that match the selector
and the :eq(1) says find the oneth (zero-indexed, so the second) element in the list
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How to generate sample XML documents from their DTD or XSD?
... tutorial is available here:
http://www.oasis-open.org/committees/download.php/29661/XSD%20and%20jCAM%20tutorial.pdf
And more information on the tool - which is using the OASIS Content Assembly Mechanism (CAM) standard to refactor your XSD into a more XSLT friendly structure - can be found from the...
Can someone explain __all__ in Python?
I have been using Python more and more, and I keep seeing the variable __all__ set in different __init__.py files. Can someone explain what this does?
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Does it make sense to do “try-finally” without “catch”?
...you want the currently executing method to still throw the exception while allowing resources to be cleaned up appropriately. Below is a concrete example of handling the exception from a calling method.
public void yourOtherMethod() {
try {
yourMethod();
} catch (YourException ex) {...
Undo working copy modifications of one file in Git?
...ry)
Git status. [So we have seen one file wad modified.]
git checkout -- index.html [i have changed in index.html file :
git status [now those changes was removed]
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How to add a custom right-click menu to a webpage?
... document.body.scrollTop);
} else {
return null;
}
}
.show {
z-index: 1000;
position: absolute;
background-color: #C0C0C0;
border: 1px solid blue;
padding: 2px;
display: block;
margin: 0;
list-style-type: none;
list-style: none;
}
.hide {
display: none;
}
.show li {
...
javax.faces.application.ViewExpiredException: View could not be restored
...and session is destroyed. What should I do to redirect user to for example index.xhtml or login.xhtml and save him from seeing that error page/message?
...
Does python have a sorted list?
...gt; l = SortedList()
>>> l.update([0, 4, 1, 3, 2])
>>> l.index(3)
3
>>> l.add(5)
>>> l[-1]
5
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