Java: error handling with try-catch, empty-try-catch, dummy-return
Tag : java , By : user134570
Date : March 29 2020, 07:55 AM
around this issue A searh uses recursively defined function that easily throws exceptions. I have tried 3 ways to handle exeptions: , This is the most readable that I can make the code to: import java.util.*;
import java.io.*;
public class Find {
List<File> files = new ArrayList<File>();
List<File> dirs = new ArrayList<File>();
List<Exception> excs = new ArrayList<Exception>();
public Find(String path) {
walk(new File(path));
}
void walk(File root) {
for (File child : getChildren(root)) {
if (isDirectory(child)) {
dirs.add(child);
walk(child);
} else if (isFile(child)){
files.add(child);
}
}
}
boolean isDirectory(File f) {
try {
return f.isDirectory();
} catch (SecurityException e) {
excs.add(e);
return false;
}
}
boolean isFile(File f) {
try {
return f.isFile();
} catch (SecurityException e) {
excs.add(e);
return false;
}
}
List<File> getChildren(File root) {
File[] children;
try {
children = root.listFiles();
} catch (SecurityException e) {
excs.add(e);
return Collections.emptyList();
}
if (children == null) {
excs.add(new IOException("IOException|listFile|" + root));
return Collections.emptyList();
}
return Arrays.asList(children);
}
}
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SQLITE - INSERT does not return error but no data is inserted
Date : March 29 2020, 07:55 AM
it should still fix some issue DOH! So the local database build operation was set to 'Always copu' I have multiple versions of the same file.
Sorry for that. That's lame.
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Asp.net C# show Catch error on data insert to database
Tag : chash , By : James Cary
Date : March 29 2020, 07:55 AM
this one helps. Scripts in ScriptManager are identified by it's type and it's key. Your problem is because in catch and in finally you wrote two identical keys - "alert". To achieve expected behavior use different keys, for ex. "alert_catch" and "alert_finally"
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JS: Catch network error and return default response data
Date : March 29 2020, 07:55 AM
may help you . so you can clean it a little bit more. since any return from .catch consider the value of the next resolved promise. you do not need to return Promise.resolve(value) return value are enough function getDataFromAPI(id) {
return axios.get(`${BASE_URL}/${id}`)
.then(response => response.data)
.catch((error) => {
// Only return fake data in cases of connection issues
if (error.message == 'Network error') {
return {
myDefaultData: 'default data all over the place'
};
else {
return 'return something or throw new exception'
}
});
}
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Python Spanner Client API INSERT DML Doesn't Insert data or return error
Date : March 29 2020, 07:55 AM
should help you out Your issue appears to be due to Python's strict requirement for proper spacing and indenting. Update the insert_message function to be structured like the following: def insert_message(transaction):
row_ct = transaction.execute_update(
"INSERT MESSAGE_STORE (MessageId, Message, MessageRecipient, MessageSender) "
" VALUES ('id', 'hello spanner', 'fred', 'bob')"
)
print("{} record(s) inserted.".format(row_ct))
try:
self.client.run_in_transaction(insert_message)
except Exception as e:
self.logger.debug(e)
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