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Nest assignment into if-statement

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BrainChemistry:
Hi there,

I saw in C examples, expressions like "if (var = func()) = value {}" but I wonder if something like this is possible in Free Pascal?

Pseudo-Code

--- Code: Pascal  [+][-]window.onload = function(){var x1 = document.getElementById("main_content_section"); if (x1) { var x = document.getElementsByClassName("geshi");for (var i = 0; i < x.length; i++) { x[i].style.maxHeight='none'; x[i].style.height = Math.min(x[i].clientHeight+15,306)+'px'; x[i].style.resize = "vertical";}};} ---if ( ex_var := ex_func( ex_param ) ) = 0 thenbegin  //whateverend;  
Thanks for your help in advance.

BeniBela:
You can only do it like this:


--- Code: ---function assignwrap(out assignee: integer; const data: integer): integer;
begin
  result := data;
  assignee := data;
end;

if assignwrap(ex_var, ex_func(ex_param)) = 0 then ...

--- End code ---



Pascal is an ugly language

taazz:

--- Quote from: BrainChemistry on January 09, 2016, 01:12:36 am ---Hi there,

I saw in C examples, expressions like "if (var = func()) = value {}" but I wonder if something like this is possible in Free Pascal?

Pseudo-Code

--- Code: Pascal  [+][-]window.onload = function(){var x1 = document.getElementById("main_content_section"); if (x1) { var x = document.getElementsByClassName("geshi");for (var i = 0; i < x.length; i++) { x[i].style.maxHeight='none'; x[i].style.height = Math.min(x[i].clientHeight+15,306)+'px'; x[i].style.resize = "vertical";}};} ---if ( ex_var := ex_func( ex_param ) ) = 0 thenbegin  //whateverend;  
Thanks for your help in advance.

--- End quote ---
either

--- Code: Pascal  [+][-]window.onload = function(){var x1 = document.getElementById("main_content_section"); if (x1) { var x = document.getElementsByClassName("geshi");for (var i = 0; i < x.length; i++) { x[i].style.maxHeight='none'; x[i].style.height = Math.min(x[i].clientHeight+15,306)+'px'; x[i].style.resize = "vertical";}};} ---ex_var := ex_func( ex_param )if ( ex_var = 0) thenbegin  //whateverend;  or
--- Code: Pascal  [+][-]window.onload = function(){var x1 = document.getElementById("main_content_section"); if (x1) { var x = document.getElementsByClassName("geshi");for (var i = 0; i < x.length; i++) { x[i].style.maxHeight='none'; x[i].style.height = Math.min(x[i].clientHeight+15,306)+'px'; x[i].style.resize = "vertical";}};} --- if ( ex_func( ex_param ) = 0) thenbegin  //whateverend;  

BrainChemistry:

--- Quote from: BeniBala ---Pascal is an ugly language
--- End quote ---

Very rarely, but sometimes yes  :-\.

The wrapping solution is nice but makes it more lines of code, that is what I'd like to prevent :-).


--- Quote from: taazz ---
--- Code: Pascal  [+][-]window.onload = function(){var x1 = document.getElementById("main_content_section"); if (x1) { var x = document.getElementsByClassName("geshi");for (var i = 0; i < x.length; i++) { x[i].style.maxHeight='none'; x[i].style.height = Math.min(x[i].clientHeight+15,306)+'px'; x[i].style.resize = "vertical";}};} ---ex_var := ex_func( ex_param )if ( ex_var = 0) thenbegin  //whateverend;
--- End quote ---

Yes, that is what I rather did before. The idea was to change it into one line.


--- Quote from: taazz ---
--- Code: Pascal  [+][-]window.onload = function(){var x1 = document.getElementById("main_content_section"); if (x1) { var x = document.getElementsByClassName("geshi");for (var i = 0; i < x.length; i++) { x[i].style.maxHeight='none'; x[i].style.height = Math.min(x[i].clientHeight+15,306)+'px'; x[i].style.resize = "vertical";}};} ---if ( ex_func( ex_param ) = 0) thenbegin  //whateverend;
--- End quote ---
I need to work with the return value afterwards, so this solution is neat but not suitable in my case.

Thanks you two for clearification  :)!

taazz:

--- Quote from: BrainChemistry on January 09, 2016, 10:53:06 am ---The wrapping solution is nice but makes it more lines of code, that is what I'd like to prevent :-).

--- End quote ---
Not really you just make sure you have a unit with overloaded functions for most of the basic types somewhere and use that when needed. Its a nice solution and not to different from your original showcase.

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