C++ - 'try, throw, catch' compare to regular C-style 'if'

Sponsored Content

Top Forums Programming C++ - 'try, throw, catch' compare to regular C-style 'if' - advantages? Post 302901331 by Corona688 on Tuesday 13th of May 2014 11:26:31 AM

05-13-2014

Registered User

Well, some would say it makes for a cleaner interface. Compare it to Java, which forces you to use it by often having nothing but throw/catch for errors. (For sockets, for example.) It can condense a long list of

Code:

if(statement fails) { do something ; go somewhere };
else if(another statement fails) { do something else ; go somewhere else }
else if(yet another statement fails) { do yet something else;  go to handler }
...

into its raw fundamentals of

Code:

try {
        some statement;
        another statement;
        yet another statement;
}
catch {
...
}

It also lets you defer errors, so something else besides your code can catch them. And it gives your code a way to describe all known errors, not just the ones you have a handy return code for. It's harder to paint yourself into a corner.

I'm just playing devil's advocate though... At best it converts if(statement) else if(statement2) into try { statement } catch { ... } try {statement2 } catch { ... } which is actually messier... At worst, try/catch amounts to a blind, targetless goto carrying a blind, typeless error code; as bad as or worse than the worst excesses of the old-fashioned spaghetti programming C++ is supposedly designed to avoid.

Corona688

View Public Profile for Corona688

Visit Corona688's homepage!

Find all posts by Corona688

8 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Linux advantages?

Hello to help me with my studying of unix/linux outside of work I was thinking of installing Linux at home aswell as using Windows XP. Im pretty new to Linux and Unix, could someone tell me the possible benifits or even negatives of running Linux at home as an opperating system as opposed to...

2. UNIX for Dummies Questions & Answers

Advantages of Groups

What are the advantages of putting users into groups? I understand that in a corporate environment, you should create a group for each department. ie: putting finance employees into a finance group. But are there any system advantages for doing that? How would it make it easier on the system...

3. Shell Programming and Scripting

advantages of Perl ?

What is the advantages of Perl in Unix environnement. Is it for scripts ? Text manipulation ? Have you a Concrete exemple of perl utilisation. Thanks you

4. Shell Programming and Scripting

compare variable against regular expression?

is it possible? if so, how? i want to check a variable whether is it a number or letter in an if-else statement

5. Shell Programming and Scripting

AWK - compare $0 to regular expression + variable

Hi, I have this script: awk -v va=45 '$0~va{print}' flo2 That returns: "4526745 1234 " (this is the only line of the file "flo2". However, I would like to get "va" to match the begining of the line, so that is "va" is different than 45 (eg. 67, 12 ...) I would not have any output. That...

6. Shell Programming and Scripting

How to compare a file name with a regular expression !!

Hi, I need to compare file names in a folder with several strings(which are in regular expression format): For example: there is a file "objectMyHistoryBook" and there are several strings to compare this file name with: objectMyMaths*, objectMyEnglish*, objectMyHistory*,...

7. UNIX for Dummies Questions & Answers

What are some advantages of Unix?

What are some advantage's of Unix

8. UNIX for Dummies Questions & Answers

Compare files with regular expression

Readers, Reading a previous post about comparing files using awk ('awk-compare-2-columns-2-files-output-whole-line', https://www.unix.com/shell-programming-scripting/168432-awk-compare-2-columns-2-files-output-whole-line.html), it is possible to adjust this, so that regular expression can be used...

LEARN ABOUT BSD

ratfor

RATFOR(1)						      General Commands Manual							 RATFOR(1)

NAME

       ratfor - rational Fortran dialect

SYNOPSIS

       ratfor [ option ... ] [ filename ... ]

DESCRIPTION

       Ratfor  converts a rational dialect of Fortran into ordinary irrational Fortran.  Ratfor provides control flow constructs essentially iden-
       tical to those in C:

       statement grouping:
	      { statement; statement; statement }

       decision-making:
	      if (condition) statement [ else statement ]
	      switch (integer value) {
		   case integer:  statement
		   ...
		   [ default: ]   statement
	      }

       loops: while (condition) statement
	      for (expression; condition; expression) statement
	      do limits statement
	      repeat statement [ until (condition) ]
	      break
	      next

       and some syntactic sugar to make programs easier to read and write:

       free form input:
	      multiple statements/line; automatic continuation

       comments:
	      # this is a comment

       translation of relationals:
	      >, >=, etc., become .GT., .GE., etc.

       return (expression)
	      returns expression to caller from function

       define:
	      define name replacement

       include:
	      include filename

       Ratfor is best used with f77(1).

SEE ALSO

       f77(1)
       B. W. Kernighan and P. J. Plauger, Software Tools, Addison-Wesley, 1976.

7th Edition							  April 29, 1985							 RATFOR(1)