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Design Patterns: Abstract Factory vs Factory Method
...omplicated refer to next diagram for better real-life example).
Example From The .NET Framework
DbFactoriesProvider is a Simple Factory as it has no sub-types. The DbFactoryProvider is an abstract factory as it can create various related database objects such as connection and command objects.
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What are “res” and “req” parameters in Express functions?
...ponse.contentType('application/json');
// Normally, the data is fetched from a database, but we can cheat:
var people = [
{ name: 'Dave', location: 'Atlanta' },
{ name: 'Santa Claus', location: 'North Pole' },
{ name: 'Man in the Moon', location: 'The Moon' }
];
// Since the re...
Android ImageView Zoom-in and Zoom-Out
... to the comment above. The same happens to me. Is there any way to stop it from zooming in on the first tap? The ImageView itself is set to centerFit.
– Baz
Feb 1 '13 at 13:57
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Convert list to tuple in Python
... do:
t = *l, # or t = (*l,)
short, a bit faster but probably suffers from readability.
This essentially unpacks the list l inside a tuple literal which is created due to the presence of the single comma ,.
P.s: The error you are receiving is due to masking of the name tuple i.e you assign...
How can I start an interactive console for Perl?
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perlconsole doesn't suffer from these problems.
– Geremia
Sep 5 '16 at 16:53
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Assign multiple columns using := in data.table, by group
... modify the following line in order to get two columns for each objectName from the dim output, rather than one column with two rows? data.table(objectName=ls())[,c("rows","cols"):=dim(get(objectName)),by=objectName] (I'm using data.table 1.8.11)
– dnlbrky
May ...
Can I create a named default constraint in an add column statement in SQL Server?
...are right, but it is clearer upon reading it that the NOT NULL is separate from the constraint.
– deluxxxe
Jan 26 '17 at 15:47
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What's the meaning of Base SDK, iOS deployment target, Target, and Project in xcode
...new feature of iOS 12, you need to compile against iOS 12 SDK and use APIs from iOS 12.
– onmyway133
Feb 21 '18 at 19:06
3
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how to delete all commit history in github? [duplicate]
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this works but it will keep the history from previous commits on the tree like @Desta Haileselassie Hagos said
– Julio Marins
Dec 23 '14 at 19:09
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Init method in Spring Controller (annotation version)
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If you need to use the User from SecurityContextHolder, at PostConstruct moment it's not initialized. It's need to be used like a stateless method. (getUser()... { return Security...user(); }
– Joao Polo
Nov 24 '15...