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 DEBIAN

execute

EXECUTE(7)                                                         SQL Commands                                                         EXECUTE(7)

NAME

       EXECUTE - execute a prepared statement

SYNOPSIS

       EXECUTE name [ ( parameter [, ...] ) ]

DESCRIPTION

       EXECUTE  is  used  to execute a previously prepared statement. Since prepared statements only exist for the duration of a session, the pre-
       pared statement must have been created by a PREPARE statement executed earlier in the current session.

       If the PREPARE statement that created the statement specified some parameters, a compatible set of parameters must be passed to the EXECUTE
       statement,  or  else an error is raised. Note that (unlike functions) prepared statements are not overloaded based on the type or number of
       their parameters; the name of a prepared statement must be unique within a database session.

       For more information on the creation and usage of prepared statements, see PREPARE [prepare(7)].

PARAMETERS

       name   The name of the prepared statement to execute.

       parameter
              The actual value of a parameter to the prepared statement. This must be an expression yielding a value that is compatible  with  the
              data type of this parameter, as was determined when the prepared statement was created.

OUTPUTS

       The command tag returned by EXECUTE is that of the prepared statement, and not EXECUTE.

EXAMPLES

       Examples are given in the Examples [prepare(7)] section of the PREPARE [prepare(7)] documentation.

COMPATIBILITY

       The  SQL  standard includes an EXECUTE statement, but it is only for use in embedded SQL. This version of the EXECUTE statement also uses a
       somewhat different syntax.

SEE ALSO

       DEALLOCATE [deallocate(7)], PREPARE [prepare(7)]

SQL - Language Statements                                           2010-05-14                                                          EXECUTE(7)