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Calling virtual functions inside constructors
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Calling virtual functions from a constructor or destructor is dangerous and should be avoided whenever possible. All C++ implementations should call the version of the function defined at the level of the hierarchy in the current constructor and no further.
The C++ FAQ Lite covers this in sectio...
How to implement WiX installer upgrade?
...omatic upgrades. It prevents downgrades, giving a localised error message, and also prevents upgrading an already existing identical version (i.e. only lower versions are upgraded):
<MajorUpgrade
AllowDowngrades="no" DowngradeErrorMessage="!(loc.NewerVersionInstalled)"
AllowSameVersionUp...
Recommended Fonts for Programming? [closed]
What fonts do you use for programming, and for what language/IDE? I use Consolas for all my Visual Studio work, any other recommendations?
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Is Chrome's JavaScript console lazy about evaluating arrays?
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There appears to be some debate regarding just how much of a bug it is and whether it's fixable. It does seem like bad behavior to me. It was especially troubling to me because, in Chrome at least, it occurs when the code resides in scripts that are executed immediately (before the page is loa...
How to deal with cyclic dependencies in Node.js
I've been working with nodejs lately and still getting to grips with the module system so apologies if this is an obvious question. I want code roughly like the following below:
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How do I type using my keyboard on the iphone simulator?
...esponding to keystrokes, this fixed it.
Quit the simulator.
Go to finder and press (command+shift+G) then navigate ~/Library/Preferences.
Move com.apple.iphonesimulator.plist to the trash.
Try launching your iPhone app in the simulator again.
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Are tar.gz and tgz the same thing?
I created .tgz file with tar czvf file command.then I ended up with a tgz file. I want to know the difference between it and tar.gz.
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When should I use Write-Error vs. Throw? Terminating vs. non-terminating errors
...It does not stop a pipeline or a loop from continuing. Throw on the other hand produces what is called a terminating error. If you use throw, the pipeline and/or current loop will be terminated. In fact all execution will be terminated unless you use a trap or a try/catch structure to handle the ter...
Builder Pattern in Effective Java
...k. If it is non-static, it would require an instance of its owning class - and the point is not to have an instance of it, and even to forbid making instances without the builder.
public class NutritionFacts {
public static class Builder {
}
}
Reference: Nested classes
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How to use __doPostBack()
...eter(parameter)
{
__doPostBack('btnSave', parameter)
}
</script>
And in your code behind add something like this to read the value and operate upon it:
public void Page_Load(object sender, EventArgs e)
{
string parameter = Request["__EVENTARGUMENT"]; // parameter
// Request["__EVENTTA...