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Do I really have a car in my garage? [duplicate]
...n this case. If your garage has so many bays, and each bay can be occupied by either a car or a boat, then the OP's design makes perfect sense. The design here, with separate lists of cars and boats means that you will have to update the code whenever you add a new type of vehicle (motorcycle, trail...
std::function vs template
...sed.
One such use case arises when you need to resolve a call at run-time by invoking a callable object that adheres to a specific signature, but whose concrete type is unknown at compile-time. This is typically the case when you have a collection of callbacks of potentially different types, but w...
Backing beans (@ManagedBean) or CDI Beans (@Named)?
...eta version m06.
History
The core difference is, @ManagedBean is managed by JSF framework and is only via @ManagedProperty available to another JSF managed beans. @Named is managed by application server (the container) via CDI framework and is via @Inject available to any kind of a container manag...
Difference between class and type
...olds a primitive value of that same type. Such a value can only be changed by assignment operations on that variable.
A variable of reference type always holds the value of a reference to an object. All objects, including arrays, support the methods of class Object. The reference types are class typ...
How do you clear Apache Maven's cache?
...cts (or the full local repo) from c:\Users\<username>\.m2\repository by hand.
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Case Insensitive Flask-SQLAlchemy Query
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You can do it by using either the lower or upper functions in your filter:
from sqlalchemy import func
user = models.User.query.filter(func.lower(User.username) == func.lower("GaNyE")).first()
Another option is to do searching using ili...
Window.open and pass parameters by post method
...h window.open method I open new site with parameters, which I have to pass by post method.I've found solution, but unfortunately it doesn't work. This is my code:
...
Bash if [ false ] ; returns true
... most other programming languages. false is a command which always fails. (By analogy, true is a command that always succeeds.)
– chepner
Oct 29 '13 at 22:24
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How do I log a Python error with debug information?
...", line 2, in <module>
ZeroDivisionError: integer division or modulo by zero
@Paulo Cheque notes, "be aware that in Python 3 you must call the logging.exception method just inside the except part. If you call this method in an arbitrary place you may get a bizarre exception. The docs alert ab...
How to Create Deterministic Guids
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As mentioned by @bacar, RFC 4122 §4.3 defines a way to create a name-based UUID. The advantage of doing this (over just using a MD5 hash) is that these are guaranteed not to collide with non-named-based UUIDs, and have a very (very) smal...