Ted Naleid

Out of the box, groovy gives you a number of powerful methods to iterate over lists and maps:

def fibList = [1, 1, 2, 3, 5]
 
fibList.each { println it }  // prints all of the numbers in the list
assert fibList.any { it == 3 }
assert fibList.every { it > 0 }
assert fibList.collect { it - 1 } == [0, 0, 1, 2, 4]
assert fibList.findAll { it > 1 && it < 5 } == [2, 3]
assert fibList.find { it > 1 } == 2
assert fibList.inject("fib: ") { str, val -> str << val }.toString() == "fib: 11235"

That’s really nice if you’re working with raw lists and maps, but what if you have a class that doesn’t extend list or map? How hard is it to empower that class with the groovy iteration methods? If this were Java, you’d likely need to implement an interface with these methods (and throw a “not implemented” exception for those you didn’t feel like taking the time to implement).

Since it’s not Java, but groovy (and you’ve read the title of this blog post :), you know it’s easy!
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7 Comments » Posted by tednaleid / grails and groovy and shortcut

In his book, The Productive Programmer, Neal Ford talks about using shims or jigs to help productivity. Jigs and shims are quickly created little snippets of code that automate repetitive tasks or make them easy enough that they’re worth doing. They’re little tools that help make your job easier and let you avoid using brute force to solve all of your problems.

My home directory has a bin folder in it that’s continually getting new jigs added to it, and my zshrc file is an ever-expanding list of quick shell functions.

Recently, I’ve been doing a lot more work with Mercurial as the team that I’m on switched from Subversion a couple of months ago on our Grails project. The initial transition was a little difficult for some people, but I think just about everyone is pretty happy with the transition now that we’ve made it.

Something that has helped everyone get comfortable with more complex Distributed Version Control System like Mercurial has been the distribution of shims and jigs amongst the team. I thought these tips might be useful to others as well.
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1 Comment » Posted by tednaleid / command line and mercurial and osx and shortcut

Just ran across Ubiquity over on on waxy.

It’s an alpha Firefox plugin that’s attempting to be a command line for the internet. It reminds me a little of yubnub, but quite a bit more powerful as it’s available on every page and is context sensitive.

Essentially, it has a set of built in commands (that you can add to an extend) and it’s aware of the current browser context, so if you have something highlighted, it can act on that subset of the current page.

Previously, I’ve been a heavy user of Firefox smart keywords, which allow you to assign aliases to bookmarks and type the aliases in the location bar. I’ve created smart keywords that allow me to search wikipedia, amazon, imdb and the dictionary. Ubiquity has all of these, plus a lot more built-in.

I’ve only been using it for a little bit, and there are some rough edges, but I think that there is quite a bit of promise here as well and thought that there might be a few other keyboard jockeys out there that would appreciate what Ubiquity is trying to do.

1 Comment » Posted by tednaleid / Uncategorized and command line and osx and shortcut

As my coworkers know, I’m a keyboard shortcut junkie. It’s a problem (and I need help), but I’d rather give you a taste of what I’ve been smoking and drag you down with me :).

Why only 3? Because people don’t learn a couple of pages of keystroke combinations at a time. But with only the 3 of the best keystrokes, there’s a good chance I’ll get you hooked and you’ll seek out some more.
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1 Comment » Posted by tednaleid / command line and osx and shortcut

If you’ve ever wondered what methods a groovy class has available for you to call, all you need to do is ask the metaClass:

"foo".metaClass.methods*.name

Result:

["equals", "getClass", "hashCode", "notify", "notifyAll", "toString", "wait", "wait", 
"wait", "charAt", "codePointAt", "codePointBefore", "codePointCount", "compareTo", 
"compareTo", "compareToIgnoreCase", "concat", "contains", "contentEquals", 
"contentEquals", "copyValueOf", "copyValueOf", "endsWith", "equals", 
"equalsIgnoreCase", "format", "format", "getBytes", "getBytes",
 "getBytes", "getChars", "hashCode", "indexOf", "indexOf", "indexOf", 
"indexOf", "intern", "lastIndexOf", "lastIndexOf", "lastIndexOf", "lastIndexOf", 
"length", "matches", "offsetByCodePoints", "regionMatches", "regionMatches", 
"replace", "replace", "replaceAll", "replaceFirst", "split", "split", "startsWith",
 "startsWith", "subSequence", "substring", "substring", "toCharArray", 
"toLowerCase", "toLowerCase", "toString", "toUpperCase", "toUpperCase", 
"trim", "valueOf", "valueOf", "valueOf", "valueOf", "valueOf", "valueOf", 
"valueOf", "valueOf", "valueOf"]

There’s a lot of duplication in there, and the order is random, so I’ll often fix that like this:

"foo".metaClass.methods*.name.sort().unique()

Result:

["charAt", "codePointAt", "codePointBefore", "codePointCount", "compareTo",
 "compareToIgnoreCase", "concat", "contains", "contentEquals", "copyValueOf", 
"endsWith", "equals", "equalsIgnoreCase", "format", "getBytes", "getChars",
 "getClass", "hashCode", "indexOf", "intern", "lastIndexOf", "length", "matches", 
"notify", "notifyAll", "offsetByCodePoints", "regionMatches", "replace", "replaceAll",
 "replaceFirst", "split", "startsWith", "subSequence", "substring", "toCharArray", 
"toLowerCase", "toString", "toUpperCase", "trim", "valueOf", "wait"]

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4 Comments » Posted by tednaleid / grails and groovy and shortcut

There’s a blog post by one of the subversion developers talking about the future of subversion in a DVCS world.

I agree with parts of the post (and many of the comments) that subversion will continue to be around for a long time, but that more and more developers will start using tools like mercurial and git as a “super client” for a normal centralized version control repository.

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3 Comments » Posted by tednaleid / command line and grails and osx and shortcut

There’s a tip over on lifehacker that shows how to open a new window for an application that has no windows currently open by cmd-tabbing to it and then holding down the option key before releasing command.

This didn’t seem like that great of a tip to me at first, because cmd-N brings up a new window in just about any application that this will work for. Then I noticed the first comment where the poster noted that holding option down will also unminimize any minimized windows for that application. Something that I didn’t previously know how to do in native OSX after many google searches.

The native ways of using the keyboard to get it unminimized that I knew of were either kludgy (ctrl-F3 to select the dock and then using the arrows to find the minimized app and hitting return), or required an external app like Witch.

I’ve gotten into the habit of hiding windows (cmd-H) rather than minimizing, but this might get me to start using minimize again.

1 Comment » Posted by tednaleid / osx and shortcut