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What is the easiest way to duplicate an activerecord record?
...you a new (not saved to the DB) record with an unassigned ID.
Note that it does not copy associations, so you'll have to do this manually if you need to.
Rails 3.1 clone is a shallow copy, use dup instead...
share
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How do we use runOnUiThread in Android?
...ink I've misunderstood something, because on clicking the button - the app does not respond anymore
12 Answers
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What is the difference between pull and clone in git?
What is the difference between doing (after mkdir repo and cd repo ):
11 Answers
11...
Efficiency of premature return in a function
...xamples. About the only difference you might see is that the two different do-somethings get swapped - and even that may well be undone in many implementations to optimise branch prediction or for some other issue where the platform determines the preferred ordering.
– Steve314...
Java ResultSet how to check if there are any results
..., after that test you will be pointing to the first row. So make sure you don't accidentally skip a row.
– Matthew Flaschen
May 15 '09 at 6:15
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How do you organise multiple git repositories, so that all of them are backed up together?
...sumes that the "unit of
cloning" is the repository, and practically has to do so because of
its distributed nature.
One solution is to keep every project/package/etc. as its own bare
repository (i.e., without working tree) under a blessed hierarchy,
like:
/repos/a.git
/repos/b.git
/repos/c.git
O...
config.assets.compile=true in Rails production, why not?
...
I wrote that bit of the guide.
You definitely do not want to live compile in production.
When you have compile on, this is what happens:
Every request for a file in /assets is passed to Sprockets. On the first request for each and every asset it is compiled and cached ...
“To Do” list before publishing Android app to market [closed]
...ed in regard to publishing an app that goes beyond the obvious and already documented.
12 Answers
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How do I convert a String to an int in Java?
...g = "1234";
int foo = Integer.parseInt(myString);
If you look at the Java documentation you'll notice the "catch" is that this function can throw a NumberFormatException, which of course you have to handle:
int foo;
try {
foo = Integer.parseInt(myString);
}
catch (NumberFormatException e)
{
f...
What's the opposite of 'make install', i.e. how do you uninstall a library in Linux?
...source / build tree. However, it only affects the source / build tree; it does not touch the rest of the filesystem and so will not remove previously installed software.
If you're lucky, running make uninstall will work. It's up to the library's authors to provide that, however; some authors prov...