24 Patterns for Clean Code: Techniques for Faster, Safer Code with Minimal Debugging by Robert Beisert

Author:Robert Beisert [Beisert, Robert]
Language: eng
Format: epub, pdf
Publisher: Evermore Instructional
Published: 2015-12-30T23:00:00+00:00

It’s a bit hard to describe this pattern without an example, so bear with me:

int copy(const char * const input, int size, char * output)

{

int code = 0;

if( input == NULL )

{

code = -1;

}

else if ( output = (char *) malloc (size * sizeof(char) ) , output == NULL )

{

code = -2;

}

else if ( strncpy(output, input, size), 0 )

{

//impossible due to comma-spliced 0

}

else if (strncmp(output, input))

{

code = -3;

}

else if ( printf("%s\n", output) < 0 )

{

//printf returns the number of printed characters

//Will only be less than 0 if write error occurs

code = -4;

}

else

{

//could do something on successful case, but can't think of what that would be

}

//Normally we would pass output back, but let's just free him here for fun

//This is where we do all our cleanup

if(output != NULL)

free(output);

return code;

}

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