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Add Variables to Tuple
...rom the original tuple along with the new element.
>>> tuple1 = ("foo", "bar")
>>> tuple2 = (*tuple1, "baz")
>>> tuple2
('foo', 'bar', 'baz')
The byte code is almost the same as tuple1 + ("baz",)
Python 3.7.5 (default, Oct 22 2019, 10:35:10)
[Clang 10.0.1 (clang-1001.0....
Rails has_and_belongs_to_many migration
...
Which comes first? foo or foo_bar?
– B Seven
Feb 27 '15 at 18:04
1
...
AngularJS - placeholder for empty result from filter
...
I use ng-controller="FooController as $ctrl" and did "bar in $ctrl.filteredBars = (bars | filter:barFilter)" so I could even use $ctrl.filteredBars.length outside the ng-repeat. Thanks for this epic hint!
– xlttj
...
RegEx to exclude a specific string constant [duplicate]
...siest way would be to use a negative-match option, for example:
$var !~ /^foo$/
or die "too much foo";
If not, you have to do something evil:
$var =~ /^(($)|([^f].*)|(f[^o].*)|(fo[^o].*)|(foo.+))$/
or die "too much foo";
That one basically says "if it starts with non-f, the rest can be...
Java's Interface and Haskell's type class: differences and similarities?
...tself, like how Comparable<T> does it, where you are expected to use Foo implements Comparable<Foo> so that the compareTo(T otherobject) kind of has type t -> t -> Ordering. But that still requires the programmer to follow this rule, and also causes headaches when people want to ma...
Default value in Doctrine
...
Use:
options={"default":"foo bar"}
and not:
options={"default"="foo bar"}
For instance:
/**
* @ORM\Column(name="foo", type="smallint", options={"default":0})
*/
private $foo
...
A numeric string as array key in PHP
...hat the behaviour is similar but not identical to JavaScript object keys.
foo = { '10' : 'bar' };
foo['10']; // "bar"
foo[10]; // "bar"
foo[012]; // "bar"
foo['012']; // undefined!
share
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improv...
Create a new object from type parameter in generic class
... This is a WRONG answer, even in JavaScript. If you have a class Foo{ method() { return true; }, casting {} to T will not give you this method!
– JCKödel
Apr 26 '19 at 16:12
...
Best practices for SQL varchar column length [closed]
...).
-- try to create a table with max varchar length
drop table if exists foo;
create table foo(name varchar(65535) not null)engine=innodb;
MySQL Database Error: Row size too large.
-- try to create a table with max varchar length - 2 bytes for the length
drop table if exists foo;
create table fo...
Difference in make_shared and normal shared_ptr in C++
...ssary for both the control block and the data. In the other case, new Obj("foo") invokes a heap-allocation for the managed data and the std::shared_ptr constructor performs another one for the control block.
For further information, check out the implementation notes at cppreference.
Update I: Exc...