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Is there a Unix utility to prepend timestamps to stdin?
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It doesn't cease to amaze me how powerful bash is. I didn't think there would be such an easy solution for this complicated task.
– recluze
Sep 11 '12 at 10:58
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Get the new record primary key ID from MySQL insert query?
Let's say I am doing a MySQL INSERT into one of my tables and the table has the column item_id which is set to autoincrement and primary key .
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Why should I avoid using Properties in C#?
In his excellent book, CLR Via C#, Jeffrey Richter said that he doesn't like properties, and recommends not to use them. He gave some reason, but I don't really understand. Can anyone explain to me why I should or should not use properties?
In C# 3.0, with automatic properties, does this change?
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Sleep until a specific time/date
...think the solution is just to sleep for the correct number of seconds.
To do this in bash, do the following:
current_epoch=$(date +%s)
target_epoch=$(date -d '01/01/2010 12:00' +%s)
sleep_seconds=$(( $target_epoch - $current_epoch ))
sleep $sleep_seconds
To add precision down to nanoseconds (e...
C# how to create a Guid value?
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If you, like me, make the mistake of doing (new Guid().toString()) you will get 0000-00000-00000-00000. You need to do Guid.NewGuid().toString()
– Joao Carlos
Jan 3 '15 at 15:10
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Android “Only the original thread that created a view hierarchy can touch its views.”
... public void run() {
// Stuff that updates the UI
}
});
Documentation for Activity.runOnUiThread.
Just nest this inside the method that is running in the background, and then copy paste the code that implements any updates in the middle of the block. Include only the smallest amo...
String vs. StringBuilder
...y first, and then optimize for performance later. That's much easier than doing it the other way around! However, having seen the enormous performance difference in my applications between the two, I now think about it a little more carefully.
Luckily, it's relatively straightforward to run perf...
How do I get an animated gif to work in WPF?
...nstall-Package WpfAnimatedGif
and to use it, at a new namespace to the Window where you want to add the gif image and use it as below
<Window x:Class="MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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Vagrant stuck connection timeout retrying
...t this in your vagrant config Vagrantfile:
config.vm.provider :virtualbox do |vb|
vb.gui = true
end
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MySQL offset infinite rows
...MySQL's LIMIT requires a limit as well as an offset. Is there any way to do this?
9 Answers
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