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Ruby on Rails: How can I revert a migration with rake db:migrate?
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Run the following command
rake db:migrate:down VERSION=<version>
where <version> is the version number of your migration file you want to revert.
eg. if you want to revert a migration with file name 3846656238_create_users.rb
r...
“aapt” IOException error=2, No such file or directory" why can't I build my gradle on jenkins?
...e following similar error on Ubuntu 13.10:
Cannot run program "/usr/local/android-sdk-linux/build-tools/19.0.3/aapt": error=2, No such file or directory
And this answer fixed it for me:
To get aapt working (this fixed my issues with the avd as well) just install these two packages:
sudo apt-g...
How do I add multiple arguments to my custom template filter in a django template?
I looked into django's docs and book but only found example using a single argument... is it even possible?
9 Answers
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How can I programmatically check whether a keyboard is present in iOS app?
...take the easy way:
When you enter a textField, it becomes first responder and the keyboard appears.
You can check the status of the keyboard with [myTextField isFirstResponder]. If it returns YES, then the the keyboard is active.
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How to capture the browser window close event?
...ddress bar, search box, or a bookmark.
You could exclude form submissions and hyperlinks (except from other frames) with the following code:
var inFormOrLink;
$('a').on('click', function() { inFormOrLink = true; });
$('form').on('submit', function() { inFormOrLink = true; });
$(window).on("before...
Eclipse: Set maximum line length for auto formatting?
...the same except instead of the 'Line Wrapping' tab you want 'Comments' tab and uncheck 'Enable line comment formatting'
– anon58192932
Jul 2 '13 at 18:24
49
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Output to the same line overwriting previous output?
... I found I needed to include the \r at the start of the string, and set end='' instead to get this to work. I don't think my terminal likes it when I end with \r
– Jezzamon
Jan 20 '16 at 0:46
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How does Amazon RDS backup/snapshot actually work?
I am an Amazon RDS customer and am experiencing daily amazon RDS write latency spikes, corresponding roughly to the backup window. I will also see spikes at the end of a snapshot (case in point: running a snapshot takes appx 1 hour, and in the final 5 minutes, write latency spikes). I am running a m...
Html code as IFRAME source rather than a URL
This standard code for an IFRAME, is there a way to replace the src URL with Just html code? so my problem is simple, I have a page it loads an HTML body from MYSQL I want to present that code in a frame so it renders it self independent of the rest of the page and in the confines of that specific b...
How can I convert NSDictionary to NSData and vice versa?
I am sending NSString and UIImage using bluetooth. I decided to store both in a NSDictionary and then convert the dictionary to NSData .
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