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How to create local notifications?

...thorizationOptionAlert) completionHandler:^(BOOL granted, NSError * _Nullable error) { if (!error) { NSLog(@"request authorization succeeded!"); [self showAlert]; } }]; -(void)showAlert { UIAlertController *objAlertControlle...
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Is it considered bad practice to perform HTTP POST without entity body?

...example below) doesn't have a parameter to accept a body. the method "post_disable_db" just accepts a path parameter "db_name" and doesn't have a 2nd parameter which would imply a mandatory body. @router.post('/{db_name}/disable', status_code=HTTP_200_OK, response_model=R...
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How can I store my users' passwords safely?

...tials'; } (In case you are still using legacy 5.3.7 or newer you can install ircmaxell/password_compat to have access to the build-in functions) Improving upon salted hashes: add pepper If you want extra security, the security folks now (2017) recommend adding a 'pepper' to the (automatically)...
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javac : command not found

... yes, i am sure. just look at the java-1.6.0-openjdk.x86_64 package information (scroll to the "Files" section) and see that there is no javac in that package. and then look at the OpenJDK Development Environment package. – ax. Mar 23 '11 at ...
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Django - how to create a file and save it to a model's FileField?

...nt to have a look at FileField and FieldFile in the Django docs, and especially FieldFile.save(). Basically, a field declared as a FileField, when accessed, gives you an instance of class FieldFile, which gives you several methods to interact with the underlying file. So, what you need to do is: s...
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Why no generics in Go?

... id types. Type information is preserved and can be "cast" (asserted, actually) back to its concrete type. Get the gritty details here: golang.org/ref/spec#Type_assertions – tbone Aug 25 '13 at 20:50 ...
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How can I index a MATLAB array returned by a function without first assigning it to a local variable

... It actually is possible to do what you want, but you have to use the functional form of the indexing operator. When you perform an indexing operation using (), you are actually making a call to the subsref function. So, even though ...
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Why can't yield return appear inside a try block with a catch?

...ty. I suspect there are very, very few times where this restriction is actually an issue that can't be worked around - but the added complexity in the compiler would be very significant. There are a few things like this that I've already encountered: Attributes not being able to be generic Inabil...
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Setting PATH environment variable in OSX permanently

... This worked in EL Capitan. Close all the terminals and open a new terminal to check echo $PATH. – Prem Ananth C Apr 3 '16 at 12:25 ...
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How are booleans formatted in Strings in Python?

...False) True, False This is not specific to boolean values - %r calls the __repr__ method on the argument. %s (for str) should also work. share | improve this answer | foll...