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Differences between strong and weak in Objective-C
...r the case, the object gets destroyed and your weak property will automatically get set to nil. The most frequent use cases of weak references in iOS are:
delegate properties, which are often referenced weakly to avoid retain cycles, and
subviews/controls of a view controller's main view because t...
Generate a random point within a circle (uniformly)
...triangle ABC, where |AB|=|BC|? Let's make this easier by extending to a parallelogram ABCD. It's easy to generate points uniformly in ABCD. We uniformly pick a random point X on AB and Y on BC and choose Z such that XBYZ is a parallelogram. To get a uniformly chosen point in the original triangle we...
How to generate XML file dynamically using PHP?
I have to generate a xml file dynamically at runtime. Please help me in generating the below XML file dynamically using PHP.
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MySQL/Amazon RDS error: “you do not have SUPER privileges…”
... The -f option will not make the errors go away, it will just allow the non-offending SQL statements in the file to be processed. From what I've read, RDS is choking on stored procedures in the dump file. Try creating a dump file without store procedures and see if that loads OK: mysqld...
How do I import a Swift file from another Swift file?
...eded to import the base module in the test file. In my case, my target is called 'myproject' and I added import myproject and the class was recognised.
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Determine the data types of a data frame's columns
...ation as a vector (i.e. you don't need it to do something else programmatically later), just use str(foo).
In both cases foo would be replaced with the name of your data frame.
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How can I consume a WSDL (SOAP) web service in Python?
...d zeep today and it was surprisingly easy to use. Was able to consume and call a Soap 1.1/1.2 service with 3 lines of code.
– Jagu
Jan 10 '17 at 4:02
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Is it possible only to declare a variable without assigning any value in Python?
...ython is dynamic, so you don't need to declare things; they exist automatically in the first scope where they're assigned. So, all you need is a regular old assignment statement as above.
This is nice, because you'll never end up with an uninitialized variable. But be careful -- this doesn't mean...
spring boot default H2 jdbc connection (and H2 console)
...ething to enter when starting the H2 console (in this case, "AZ"). I think all of these are required though it seems like leaving out the spring.jpa.database-platform does not hurt anything.
In application.properties:
spring.datasource.url=jdbc:h2:mem:AZ;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE
s...
Best practice: ordering of public/protected/private within the class definition?
...ode too much probably needs to be balanced with forcing the reader to read all the nitty-gritty detail of private methods. The newspaper metaphor is probably misunderstood in that your public methods should represent broadly what your class does, and your private methods supply the details (almost l...