Two more Textmate commands (capitalize, CSV to list) alvin September 11, 2016 - 10:43am

As a “note to self,” I wrote two more Textmate commands yesterday, one to capitalize each word in a selection of words, and another to convert a CSV list of words to a simple list. Here’s the source code for the Capitalize command:


perl -ne 'print ucfirst $_'

The $_ portion of that Perl command isn’t required, but I include it as a reminder to myself about how Textmate commands and snippets work.

Here’s the source code for my Textmate command that uses the Unix tr command to convert a CSV list of words (such as a paragraph of comma-separated words) into a simple list of words:


tr , "\n"

As you can see, those commands are fairly simple. If you know Unix/Linux and then know a little about how to write Textmate commands, you can usually get it to do what you want. I like that you can use any Mac/Unix programming language or tool to solve the problem at hand.

How to convert a Sencha ExtJS textfield to uppercase on the textfield blur event alvin March 24, 2014 - 10:07am

This brief Sencha tutorial shows how to convert the text in a Sencha ExtJS textfield to uppercase on the textfield blur event. I use this technique on the symbol field in a form where I let users enter stock symbols, such as “AAPL”, “GOOG”, etc.

First, the symbol field in my StockForm.js view component is defined like this:

Case insensitive SQL SELECT query examples

Case insensitive SQL SELECT query FAQ: How do I issue SQL SELECT queries while ignoring case (ignoring whether a string is uppercase or lowercase)?

Perl uppercase and lowercase string conversion alvin January 6, 2010 - 3:57am

Perl lowercase/uppercase string FAQ: How do I convert a string to uppercase or lowercase in Perl?

Solution: To convert a string to all uppercase characters use the Perl uc function, and to convert them to lowercase use the lc function.

Here are a couple of examples to help demonstrate this Perl uppercase/lowercase string conversion.

Perl uppercase string conversion

Here's a Perl uppercase example, converting a Perl string from whatever it was to all uppercase characters:

iPhone caps lock

After watching a young relative type on an iPhone recently, I realized he didn't know how to use the "iPhone caps lock" feature. I assumed a person younger than me would know how to use the iPhone caps lock feature, lol, but it's not too surprising, because enabling the caps lock feature isn't the most obvious thing in the world.

iPhone caps lock

To use the iPhone caps lock feature, whenever you're typing something -- like composing an email -- just tap the iPhone Shift button twice. You need to do this quickly, similar to a double-click.

Java: How to test if a String contains a case-insensitive regex pattern alvin June 8, 2009 - 11:54am

Java String FAQ: How can I tell if a Java String contains a given regular expression (regex) pattern?

In a Java program, you want to determine whether a String contains a case-insensitive regular expression (regex). You don't want to manipulate the String or extract the match, you just want to determine whether the pattern exists at least one time in the given String.

Batch rename filenames with this shell script alvin August 20, 2007 - 8:53pm

Here's a Unix shell script that converts all "*.png" files in the current directory to lower-case names. In my case I had files named "Slide1.png", etc., and I wanted them to be named "slide1.png", and this script did the trick.