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Re: Recommendation for a good Android programming book?

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On 6/5/2015 1:30 PM, Martin Gregorie wrote:
> On Fri, 05 Jun 2015 08:06:32 -0400, Eric Sosman wrote:
>
>> On 6/4/2015 5:00 PM, Martin Gregorie wrote:
>>> On Wed, 03 Jun 2015 21:26:04 -0400, Arne Vajhøj wrote:
>>>
>>>> [sorry if duplicate post]
>>>>
>>>> On 5/26/2015 6:36 PM, Martin Gregorie wrote:
>>>>    > On Tue, 26 May 2015 17:21:32 -0400, Eric Sosman wrote:
>>>>    >> This is a more precise operation than a global
>>>>    >> search-and-replace,
>>>>    >> because the IDE can distinguish one `x' from another: If I rename
>>>>    >> one of my instance fields from `x' to `columnIndex', the IDE
>>>>    >> won't mess up the references to `x' in some other class like
>>>>    >> java.awt.Point.
>>>>    >>
>>>>    > I normally use microEmacs, which can do almost that:
>>>>    >
>>>>    > me org/gregorie/newproject/*.java
>>>>    >
>>>>    > Then tell it once only what I want it to replace and what with
>>>>    > just once and it works through all the files. I've never
>>>>    > discovered a limit to the number of files it can load. As a bonus
>>>>    > the search term can be a regex.
>>>>
>>>> Yes. But can it distinguish between different x's based on the meaning
>>>> of the code within the files being edited?
>>>>
>>> No, unlike vi, where once you start an "s/x/y/" request running you
>>> can't interfere, microEmacs approach is to ask what you want to do at
>>> each match. The options are do it, skip this one, abandon (and it has
>>> an undo facility) or to get on and do the lot. This lets you pick and
>>> choose which matches to replace if you know that not all hits need
>>> replacing (your 'x' case), or if you know that all should be replaced,
>>> to check that the first one or two are working as expected and then let
>>> it do the rest without asking.
>>
>>       So, you get to see
>>
>> 	int value = things[i].x;
>>
>> ... and then you answer "yes" or "no?"
>>
> All are single keystrokes Y/y to make the change, N/n to skip it, Ctrl/C
> to abort, ! to do the rest without prompts. I don't see what's hard about
> that.

     I'll try to be clearer.  Suppose you've got

	public class Thing {
	    public final int x;
	    ...
	}

... and you decide `columnIndex' would be a better name than `x'.  In
another file, perhaps, you've got

	Thing thing = ...;  // has a field named `x'
	java.awt.Point point = ...;  // has a field named `x'

	... four hundred lines ...

	int value = theReference.x;

Now the editor shows you the last of these lines and asks you to
decide Y or N: Should the `x' change to `columnIndex', or should it
remain as it is?  The IDE will get this right every single time;
I certainly couldn't, and I'd be surprised if you could.

     When I wrote my first programs, my editor of choice was the
IBM 026 keypunch.  Tools have improved -- and I've been glad to take
advantage of the improvements, even though I'm temperamentally a bit
of a Luddite.  All I'm saying is that it's an error to judge today's
tools by what yesterday's were like, even if they share a brand name.

-- 
esosman@comcast-dot-net.invalid
"Don't be afraid of work. Make work afraid of you." -- TLM

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Recommendation for a good Android programming book? Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2015-05-20 15:16 -0700
  Re: Recommendation for a good Android programming book? Arne Vajhøj <arne@vajhoej.dk> - 2015-05-21 20:30 -0400
  Re: Recommendation for a good Android programming book? e.d.programmer@gmail.com - 2015-05-22 08:16 -0700
    Re: Recommendation for a good Android programming book? Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2015-05-25 20:40 -0700
      Re: Recommendation for a good Android programming book? Martin Gregorie <martin@address-in-sig.invalid> - 2015-05-26 10:15 +0000
        Re: Recommendation for a good Android programming book? Joerg Meier <joergmmeier@arcor.de> - 2015-05-26 13:27 +0200
          Re: Recommendation for a good Android programming book? Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2015-05-26 07:33 -0700
          Re: Recommendation for a good Android programming book? Martin Gregorie <martin@address-in-sig.invalid> - 2015-05-26 19:52 +0000
            Re: Recommendation for a good Android programming book? Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-05-26 17:21 -0400
              Re: Recommendation for a good Android programming book? Martin Gregorie <martin@address-in-sig.invalid> - 2015-05-26 22:36 +0000
                Re: Recommendation for a good Android programming book? Arne Vajhøj <arne@vajhoej.dk> - 2015-06-03 21:26 -0400
                Re: Recommendation for a good Android programming book? Martin Gregorie <martin@address-in-sig.invalid> - 2015-06-04 21:00 +0000
                Re: Recommendation for a good Android programming book? Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-06-05 08:06 -0400
                Re: Recommendation for a good Android programming book? Martin Gregorie <martin@address-in-sig.invalid> - 2015-06-05 17:30 +0000
                Re: Recommendation for a good Android programming book? Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-06-05 13:59 -0400
                Re: Recommendation for a good Android programming book? e.d.programmer@gmail.com - 2015-06-05 05:50 -0700
                Re: Recommendation for a good Android programming book? Martin Gregorie <martin@address-in-sig.invalid> - 2015-06-05 17:35 +0000
                Re: Recommendation for a good Android programming book? Arne Vajhøj <arne@vajhoej.dk> - 2015-06-06 23:50 -0400
                Re: Recommendation for a good Android programming book? e.d.programmer@gmail.com - 2015-06-08 07:39 -0700
                Re: Recommendation for a good Android programming book? Arne Vajhøj <arne@vajhoej.dk> - 2015-06-28 21:42 -0400
                Re: Recommendation for a good Android programming book? Martin Gregorie <martin@address-in-sig.invalid> - 2015-06-29 08:20 +0000
                Re: Recommendation for a good Android programming book? Jeff Higgins <jeff@invalid.invalid> - 2015-06-29 05:49 -0400
                Re: Recommendation for a good Android programming book? Arne Vajhøj <arne@vajhoej.dk> - 2015-06-29 07:37 -0400
                Re: Recommendation for a good Android programming book? Arne Vajhøj <arne@vajhoej.dk> - 2015-06-29 07:35 -0400
                Re: Recommendation for a good Android programming book? Martin Gregorie <martin@address-in-sig.invalid> - 2015-06-29 15:01 +0000
                Re: Recommendation for a good Android programming book? Arne Vajhøj <arne@vajhoej.dk> - 2015-06-29 14:08 -0400
                Re: Recommendation for a good Android programming book? Arne Vajhøj <arne@vajhoej.dk> - 2015-06-29 14:18 -0400
                Re: Recommendation for a good Android programming book? Martin Gregorie <martin@address-in-sig.invalid> - 2015-06-29 21:00 +0000
                Re: Recommendation for a good Android programming book? Arne Vajhøj <arne@vajhoej.dk> - 2015-07-27 22:22 -0400
                Re: Recommendation for a good Android programming book? Arne Vajhøj <arne@vajhoej.dk> - 2015-06-06 23:48 -0400

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