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Memory management in Qt?
I'm quite new to Qt and am wondering on some basic stuff with memory management and the life of objects. When do I need to delete and/or destroy my objects? Is any of this handled automatically?
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Best way to do Version Control for MS Excel
What version control systems have you used with MS Excel (2003/2007)? What would you recommend and Why? What limitations have you found with your top rated version control system?
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Determine if running on a rooted device
My app has a certain piece of functionality that will only work on a device where root is available. Rather than having this feature fail when it is used (and then show an appropriate error message to the user), I'd prefer an ability to silently check if root is available first, and if not,hide the ...
Convert to/from DateTime and Time in Ruby
...ppets are taken from O'Reilly's Ruby Cookbook. Their code reuse policy permits this.
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How do I set the time zone of MySQL?
...at value they are set to:
SELECT @@global.time_zone;
To set a value for it use either one:
SET GLOBAL time_zone = '+8:00';
SET GLOBAL time_zone = 'Europe/Helsinki';
SET @@global.time_zone = '+00:00';
(Using named timezones like 'Europe/Helsinki' means that you have to have a timezone table pro...
Freeze screen in chrome debugger / DevTools panel for popover inspection?
I'm using the chrome inspector to try and analyze the z-index of a twitter bootstrap popover, and finding it extremely frustrating...
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Excel VBA App stops spontaneously with message “Code execution has been halted”
...ution.
Press "Debug" button in the popup.
Press Ctrl+Pause|Break twice.
Hit the play button to continue.
Save the file after completion.
Hope this helps someone.
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How to bind an enum to a combobox control in WPF?
...een tries to add nice looking display strings but I don't want that complexity.
18 Answers
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Fastest way to check if string contains only digits
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bool IsDigitsOnly(string str)
{
foreach (char c in str)
{
if (c < '0' || c > '9')
return false;
}
return true;
}
Will probably be the fastest way to do it.
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How do you know what to test when writing unit tests? [closed]
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I Don’t Know Where to Start?
Start afresh. Only think about writing tests when you are writing new
code. This can be re-working of old
code, or a completely new feature.
Start simple. Don’t go running off and trying to get your head round
a testing framework as well as being
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