Perhaps a better way to do this is like this:
string[] test = new string[3];
for (int i = 0; i < 3; i++)
{
try
{
test[i] = kf.get_string(group, key);
}
catch (KeyFile.Error error)
{
// Do nothing
}
}
if (!test[0] && !test[1] && !test[3]) return false;
What do you think?
Sam
On 11-10-30 07:04 AM, PCMan wrote:
Hi all,
I started using Vala recently and I'm confused by exception handling in
Vala.
I'm quite used to write C/GObject code and handles GError.
However, with exceptions, flow-control becomes quite different.
For example, I'm reading values from a KeyFile.
With C/glib, I can pass NULL GError* pointer to g_key_file_get_string() to
ignore any errors.
If the errors are not critical for my program, it's safe to ignore them all
like this.
str1 = g_key_file_get_string(kf, group, key, NULL);
str2 = g_key_file_get_string(kf, group, key, NULL);
str3 = g_key_file_get_string(kf, group, key, NULL);
if( !str1&& !str2&& !str3)
return FALSE;
With Vala, I cannot do this. If I use try/catch, things are totally
different.
try {
str1 = kf.get_string(group, key);
str2 = kf.get_string(group, key);
str3 = kf.get_string(group, key);
}
catch(KeyFile.Error error) {
// If anyone of the preceding calls fails, we get here.
// then I cannot continue getting the remaining strings from key file.
}
If get str1 fails, the excution jumps to catch() block, and I cannot
continue reading str2 and str3.
Of course I can do this:
try {
str1 = kf.get_string(group, key);
}
catch(KeyFile.Error error) {
}
try {
str2 = kf.get_string(group, key);
}
catch(KeyFile.Error error) {
}
try {
str3 = kf.get_string(group, key);
}
catch(KeyFile.Error error) {
}
Apparently, this looks even worse then its C/glib counterpart.
So, how to ignore the GErrors/vala excaptions anyways?
Thank you all.
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