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What are the main purposes of using std::forward and which problems it solves?
...ways passed as a normal reference.
#include <iostream>
#include <string>
#include <utility>
void overloaded_function(std::string& param) {
std::cout << "std::string& version" << std::endl;
}
void overloaded_function(std::string&& param) {
std::cout...
SQL - The conversion of a varchar data type to a datetime data type resulted in an out-of-range valu
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Just used cast(SUBSTRING([MyDateField],1,2) as integer) > 31 and found a record with the 60th of December. Who enters this stuff, Dr Suess?
– SteveCav
Oct 21 '15 at 22:11
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Sequence contains no elements?
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Put a breakpoint on that line, or a Debug.Print before it, in both cases and see what ID contains.
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How to detect a Christmas Tree? [closed]
... threshold.process(tree.clone(), tree);
}
}
public static void main(String[] args) {
new ChristmasTree();
}
}
In the second step, the brightest points in the image are dilated in order to form shapes. The result of this process is the probable shape of the objects with significant brigh...
Can you do greater than comparison on a date in a Rails 3 search?
... also convert everything into the SQL notation
Note.
where("user_id = ? AND notetype = ? AND date > ?", current_user.id, p[:note_type], p[:date]).
order('date ASC, created_at ASC')
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how to add records to has_many :through association in rails
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@Mischa how should i handle error if House.find(params[:house_id]) is nill.. i got error of TypeMismatch if params[:house_id] is nil.. i already using rescue. but is there any better_way..??
– Vishal
Jul 30...
SQL UPDATE SET one column to be equal to a value in a related table referenced by a different column
...QuestionAnswers a
on q.AnswerID = a.AnswerID
where q.QuestionID is null -- and other conditions you might want
I recommend to check what the result set to update is before running the update (same query, just with a select):
select *
from QuestionTrackings q
inner join QuestionAnswers a
on q.Answ...
SELECT DISTINCT on one column
....WHERE SKU LIKE 'FOO%') a WHERE a.RowNumber = 1
– Andre Nel
Jun 21 '17 at 11:46
This works although it's not a CTE ...
Send message to specific client with socket.io and node.js
I'm working with socket.io and node.js and until now it seems pretty good, but I don't know how to send a message from the server to an specific client, something like this:
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How can I set multiple CSS styles in JavaScript?
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If you have the CSS values as string and there is no other CSS already set for the element (or you don't care about overwriting), make use of the cssText property:
document.getElementById("myElement").style.cssText = "display: block; position: absolute";...