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std::unique_ptr with an incomplete type won't compile
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Here are some em>x m>amples of std::unique_ptr with incomplete types. The problem lies in destruction.
If you use pimpl with unique_ptr, you need to declare a destructor:
class foo
{
class impl;
std::unique_ptr<impl> impl_;
pub...
How to remove specific elements in a numpy array
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Use numpy.delete() - returns a new array with sub-arrays along an am>x m>is deleted
numpy.delete(a, indem>x m>)
For your specific question:
import numpy as np
a = np.array([1, 2, 3, 4, 5, 6, 7, 8, 9])
indem>x m> = [2, 3, 6]
new_a = np.delete(a, indem>x m>)
print(new_a) #Prints `[1, 2, 5, 6, 8, 9]`
Note...
Javascript : Send JSON Object with Ajam>x m>?
...tring:JSON.stringify({name:"John", time:"2pm"}) });
Without jQuery:
var m>x m>mlhttp = new m>X m>MLHttpRequest(); // new HttpRequest instance
m>x m>mlhttp.open("POST", "/json-handler");
m>x m>mlhttp.setRequestHeader("Content-Type", "application/json");
m>x m>mlhttp.send(JSON.stringify({name:"John Rambo", time:"2pm"}))...
Check if a Postgres JSON array contains a string
...rom rabbits where (info->'food')::jsonb ? 'carrots';
You can even indem>x m> the ? query on the "food" key if you switch to the jsonb type instead:
alter table rabbits alter info type jsonb using info::jsonb;
create indem>x m> on rabbits using gin ((info->'food'));
select info->>'name' from rab...
Using reflect, how do you set the value of a struct field?
...o learn about reflection is to see how the core Go developers use it. For em>x m>ample, the Go fmt and json packages. The package documentation has links to the source code files under the heading Package files.
The Go json package marshals and unmarshals JSON from and to Go structures.
Here's a step...
How do I Moq a method that has an optional argument in its signature without em>x m>plicitly specifying i
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I believe your only choice right now is to em>x m>plicitly include the bool parameter in the setup for Foo.
I don't think it defeats the purpose of specifying a default value. The default value is a convenience for calling code, but I think that you should be em>x m>plicit in y...
Is having an 'OR' in an INNER JOIN condition a bad idea?
...ind of JOIN is not optimizable to a HASH JOIN or a MERGE JOIN.
It can be em>x m>pressed as a concatenation of two resultsets:
SELECT *
FROM maintable m
JOIN othertable o
ON o.parentId = m.id
UNION
SELECT *
FROM maintable m
JOIN othertable o
ON o.id = m.parentId
, each of them ...
object==null or null==object?
... left side of == isn't really useful in Java since Java requires that the em>x m>pression in an if evaluate to a boolean value, so unless the constant is a boolean, you'd get a compilation error either way you put the arguments. (and if it is a boolean, you shouldn't be using == anyway...)
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Which characters need to be escaped when using Bash?
...bash.
1. Put the whole string in single quotes
This works for all chars em>x m>cept single quote itself. To escape the single quote, close the quoting before it, insert the single quote, and re-open the quoting.
'I'\''m a s@fe $tring which ends in newline
'
sed command: sed -e "s/'/'\\\\''/g; 1s/^/'...
dplyr summarise: Equivalent of “.drop=FALSE” to keep groups with zero length in output
...b, .drop=FALSE) %>%
summarise(count_a=length(a))
#> # A tibble: 3 m>x m> 2
#> b count_a
#> <fct> <int>
#> 1 1 6
#> 2 2 6
#> 3 3 0
One additional note to go with @Moody_Mudskipper's answer: Using .drop=FALSE can give potentially...