Comments on: The Template Method is a lie http://lostechies.com/jimmybogard/2009/12/03/the-template-method-is-a-lie/ Strong opinions, weakly held Wed, 19 Jun 2013 05:19:00 +0000 hourly 1 http://wordpress.org/?v=3.4.2 By: Cagdas http://lostechies.com/jimmybogard/2009/12/03/the-template-method-is-a-lie/#comment-2046 Cagdas Mon, 07 Dec 2009 06:14:26 +0000 /blogs/jimmy_bogard/archive/2009/12/02/the-template-method-is-a-lie.aspx#comment-2046 @Grant +1 @Grant +1

]]> By: Ice09 http://lostechies.com/jimmybogard/2009/12/03/the-template-method-is-a-lie/#comment-2045 Ice09 Sat, 05 Dec 2009 14:48:52 +0000 /blogs/jimmy_bogard/archive/2009/12/02/the-template-method-is-a-lie.aspx#comment-2045 yes, Template Method is really tempting and often overused, especially in languages lacking an easy Strategy implementation (like closures). I elaborated this (and hope for comment) for Java, Scala ... and Spring here: http://ice09.wordpress.com/2009/11/09/scala-mashup-series-the-template-method-in-java-spring-and-scala/ yes, Template Method is really tempting and often overused, especially in languages lacking an easy Strategy implementation (like closures).
I elaborated this (and hope for comment) for Java, Scala … and Spring here: http://ice09.wordpress.com/2009/11/09/scala-mashup-series-the-template-method-in-java-spring-and-scala/

]]> By: Jeremy Gray http://lostechies.com/jimmybogard/2009/12/03/the-template-method-is-a-lie/#comment-2044 Jeremy Gray Thu, 03 Dec 2009 20:39:09 +0000 /blogs/jimmy_bogard/archive/2009/12/02/the-template-method-is-a-lie.aspx#comment-2044 @Jimmy - I figured that was the case. In any case, I am in fact in complete agreement with you in that by whatever name this kind of behaviour finds itself implemented, I try as best as I can to avoid doing so via inheritance. @Jimmy – I figured that was the case. In any case, I am in fact in complete agreement with you in that by whatever name this kind of behaviour finds itself implemented, I try as best as I can to avoid doing so via inheritance.

]]> By: bogardj http://lostechies.com/jimmybogard/2009/12/03/the-template-method-is-a-lie/#comment-2043 bogardj Thu, 03 Dec 2009 14:26:36 +0000 /blogs/jimmy_bogard/archive/2009/12/02/the-template-method-is-a-lie.aspx#comment-2043 @jeremy Here I was using imperative and procedural interchangeably. Not describing procedural languages, but procedural, imperative code. @jeremy

Here I was using imperative and procedural interchangeably. Not describing procedural languages, but procedural, imperative code.

]]> By: Jeremy Gray http://lostechies.com/jimmybogard/2009/12/03/the-template-method-is-a-lie/#comment-2042 Jeremy Gray Thu, 03 Dec 2009 13:45:00 +0000 /blogs/jimmy_bogard/archive/2009/12/02/the-template-method-is-a-lie.aspx#comment-2042 @Jimmy - if by procedural you mean imperative, well of course the code is more imperative than declarative in your example. If, instead, by procedural you mean the classic, pre-OO, capital-P Procedural, then just how exactly did you go about overriding methods B and D? @Jimmy – if by procedural you mean imperative, well of course the code is more imperative than declarative in your example. If, instead, by procedural you mean the classic, pre-OO, capital-P Procedural, then just how exactly did you go about overriding methods B and D?

]]> By: Jeremy Gray http://lostechies.com/jimmybogard/2009/12/03/the-template-method-is-a-lie/#comment-2041 Jeremy Gray Thu, 03 Dec 2009 13:39:51 +0000 /blogs/jimmy_bogard/archive/2009/12/02/the-template-method-is-a-lie.aspx#comment-2041 @Chris - Strategy and Template Method aren't alone in that, either: Nested Closure can in many cases be used to precisely the same effect, bringing along its own special flavour of Double Dispatch. Template Method is dead! Long live Template Method! :) @Chris – Strategy and Template Method aren’t alone in that, either: Nested Closure can in many cases be used to precisely the same effect, bringing along its own special flavour of Double Dispatch. Template Method is dead! Long live Template Method! :)

]]> By: bogardj http://lostechies.com/jimmybogard/2009/12/03/the-template-method-is-a-lie/#comment-2040 bogardj Thu, 03 Dec 2009 13:37:00 +0000 /blogs/jimmy_bogard/archive/2009/12/02/the-template-method-is-a-lie.aspx#comment-2040 @AC, Rob If you have this method: A() b() C() d(); And template method overrides B and D, that's procedural code. It's just a series of steps, some of which you can override. I'm not saying it's bad, there are plenty of right places for procedural code. It's just my tendency to solve duplication first with TM pattern that's gotten me into trouble. @AC, Rob

If you have this method:

A()
b()
C()
d();

And template method overrides B and D, that’s procedural code. It’s just a series of steps, some of which you can override. I’m not saying it’s bad, there are plenty of right places for procedural code. It’s just my tendency to solve duplication first with TM pattern that’s gotten me into trouble.

]]> By: Tuomas Hietanen http://lostechies.com/jimmybogard/2009/12/03/the-template-method-is-a-lie/#comment-2039 Tuomas Hietanen Thu, 03 Dec 2009 13:35:36 +0000 /blogs/jimmy_bogard/archive/2009/12/02/the-template-method-is-a-lie.aspx#comment-2039 Hi Jimmy! You can replace template-method with functional programming. :-) I wrote a code project article about it a few years ago: http://www.codeproject.com/KB/architecture/TMDPvsLambda.aspx Of course, back in 2007 the functional programming in c# was a very new concept and a lot have changed since then. You should also check this link: http://rogeralsing.com/2009/05/07/the-simplest-form-of-configurable-dependency-injection/ Hi Jimmy!

You can replace template-method with functional programming. :-)

I wrote a code project article about it a few years ago:
http://www.codeproject.com/KB/architecture/TMDPvsLambda.aspx

Of course, back in 2007 the functional programming in c# was a very new concept and a lot have changed since then.

You should also check this link:

http://rogeralsing.com/2009/05/07/the-simplest-form-of-configurable-dependency-injection/

]]> By: Gilligan http://lostechies.com/jimmybogard/2009/12/03/the-template-method-is-a-lie/#comment-2038 Gilligan Thu, 03 Dec 2009 13:25:40 +0000 /blogs/jimmy_bogard/archive/2009/12/02/the-template-method-is-a-lie.aspx#comment-2038 The place where I end up using Template method the most is in Test classes and Test Helpers. And you are right, these are mostly procedural in nature (setup run behavior then verify). The place where I end up using Template method the most is in Test classes and Test Helpers. And you are right, these are mostly procedural in nature (setup run behavior then verify).

]]> By: Rob M http://lostechies.com/jimmybogard/2009/12/03/the-template-method-is-a-lie/#comment-2037 Rob M Thu, 03 Dec 2009 11:49:50 +0000 /blogs/jimmy_bogard/archive/2009/12/02/the-template-method-is-a-lie.aspx#comment-2037 I'm struggling to see why the template pattern is inherently procedural rather than OO. Jimmy could you elaborate further? I’m struggling to see why the template pattern is inherently procedural rather than OO. Jimmy could you elaborate further?

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