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How to rollback just one step using rake db:migrate
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For starters
rake db:rollback will get you back one step
then
rake db:rollback STEP=n
Will roll you back n migrations where n is the number of recent migrations you want to rollback.
More references here.
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How do I byte-compile everything in my .emacs.d directory?
...ed to check out Emacs, and I liked it very much. Now, I'm using the Emacs Starter Kit , which sort of provides better defaults and some nice customizations to default install of Emacs.
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What should every programmer know about security? [closed]
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A good starter course might be the MIT course in Computer Networks and Security. One thing that I would suggest is to not forget about privacy. Privacy, in some senses, is really foundational to security and isn't often covered in...
Are there conventions on how to name resources?
... begin with. So I would recommend the blog post I mentioned. It's good for starters and you can definitely use it as inspiration to create good naming conventions of your own.
Also keep in mind that as a project grows, many needs and requirements may change in time. So its completely normal that na...
How to make a phone call in android and come back to my activity when the call is done?
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This is regarding the question asked by Starter.
The problem with your code is that you are not passing the number properly.
The code should be:
private OnClickListener next = new OnClickListener() {
public void onClick(View v) {
EditText num=(Edit...
How do I create an Excel (.XLS and .XLSX) file in C# without installing Microsoft Office?
...ike diff, validator, etc
Links:
Github
Main MSDN Landing
"How Do I..." starter page
blogs.MSDN brian_jones announcing SDK
blogs.MSDN brian_jones describing SDK handling large files without crashing (unlike DOM method)
s...
How to extend an existing JavaScript array with another array, without creating a new array
... a.concat([5, 4, 3]);
Concat will return a copy the new array, as thread starter didn't want. But you might not care (certainly for most kind of uses this will be fine).
There's also some nice ECMAScript 6 sugar for this in the form of the spread operator:
const a = [1, 2, 3];
const b = [...a,...
Tab space instead of multiple non-breaking spaces (“nbsp”)?
... @DavidThielen - HTML 3, in which The TAB element appeared was a non-starter with the browser makers, and the TAB element was never implemented. Instead, HTML 3.2 was created which was somewhat simpler and that was implemented instead.
– Alohci
Apr 27 '13...
Including non-Python files with setup.py
...t in any packages. Can I still use package_data? Using data_files is a non-starter, because it puts the files in a system-wide location. not associated with my project, and to make it worse, the location changes depending on whether I run "setup.py install" or "pip install", from the same sdist.
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What does 'synchronized' mean?
...cy correct with only the language primitives (synchronized, volatile). For starters, make use of the java.util.concurrent package and build on top of that.
– Thilo
Jul 6 '09 at 7:30
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