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Logging errors in ASP.NET MVC
... Elmah.
You can also find more information in the question How do you log errors (Exceptions) in your ASP.NET apps?.
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How to check if a file exists in Documents folder?
...th: method. It's often better to just try to open a file and deal with the error if the file does not exist.
NSFileManager Class Reference
Note: Attempting to predicate behavior based on the current state of the file system or a particular file on the file system is not recommended. Doing so can ca...
Unknown column in 'field list' error on MySQL Update query
I keep getting MySQL error #1054, when trying to perform this update query:
11 Answers
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Should a function have only one return statement?
...evitably wind up with code that looks like this:
function()
{
HRESULT error = S_OK;
if(SUCCEEDED(Operation1()))
{
if(SUCCEEDED(Operation2()))
{
if(SUCCEEDED(Operation3()))
{
if(SUCCEEDED(Operation4()))
{
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Why does this C++ snippet compile (non-void function does not return a value) [duplicate]
...function. [...]
This means that the compiler is not obligated provide an error nor a warning usually because it can be difficult to diagnose in all cases. We can see this from the definition of undefined behavior in the draft standard in section 1.3.24 which says:
[...]Permissible undefined be...
Error Dropping Database (Can't rmdir '.test\', errno: 17)
...hereby making it not possible to remove the directory.
MySQL displays an error message when it cannot remove the directory
you can really drop the database manually by removing any remaining files in the database directory and then the directory itself.
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“did you run git update-server-info” error on a Github repository
...b Gui from their website to manage my repos, and I'm getting the following error:
20 Answers
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How to tell if a file is git tracked (by shell exit code)?
...
try:
git ls-files --error-unmatch <file name>
will exit with 1 if file is not tracked
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Accessing an SQLite Database in Swift
...?
guard sqlite3_open(fileURL.path, &db) == SQLITE_OK else {
print("error opening database")
sqlite3_close(db)
db = nil
return
}
Note, I know it seems weird to close the database upon failure to open, but the sqlite3_open documentation makes it explicit that we must do so to avo...
What do I have to do to get Core Data to automatically migrate models?
...mber numberWithBool:YES], NSInferMappingModelAutomaticallyOption, nil];
NSError *error;
_persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel: [self managedObjectModel]];
if (![_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configu...