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Does const mean thread-safe in C++11?
... data race if it contains two conflicting actions in different threads, at least one of which is not atomic, and neither happens before the other. Any such data race results in undefined behavior.
which is nothing else than the sufficient condition for a data race to occur:
There are two or more a...
Creating a new DOM element from an HTML string using built-in DOM methods or Prototype
... This is an effective approach and very clean; however, (at least in Chrome 50) this breaks script tag handling. In other words, using this method to create a script tag and then appending it to the document (body or head) doesn't result in the tag being evaluated and hence prevents ...
jQuery see if any or no checkboxes are selected
...
JQuery .is will test all specified elements and return true if at least one of them matches selector:
if ($(":checkbox[name='choices']", form).is(":checked"))
{
// one or more checked
}
else
{
// nothing checked
}
...
Why is Double.MIN_VALUE in not negative
...mply write -Double.MAX_VALUE. It also explains why Double.MIN_VALUE is the least positive value (since that represents the least possible magnitude).
But sure, I agree that the naming is a bit misleading. Being used to the meaning Integer.MIN_VALUE, I too was a bit surprised when I read that Double...
Rails find record with zero has_many records associated [duplicate]
...nt to do a LEFT OUTER JOIN and that answer will give you a INNER JOIN. At least in Rails 5 you can use:
scope :without_photos, left_joins(:photos).where( photos: {id: nil} )
or you can use merge in cases where namespacing will make the where clause cumbersome:
scope :without_photos, left_joins(...
how to listen to N channels? (dynamic select statement)
...d by the list of cases. Like
the Go select statement, it blocks until at least one of the cases can
proceed, makes a uniform pseudo-random choice, and then executes that
case. It returns the index of the chosen case and, if that case was a
receive operation, the value received and a boolean ...
What is the difference between visibility:hidden and display:none?
...oon as something changes on the screen the whole screen will re-render (at least it used to), and so it doesn't really matter. You're still forcing a screen repaint. This could very browser by browser though, and in truth there are probably better ways to optimize the code than focusing on these.
...
Where are my postgres *.conf files?
...ows indefinite delay
#wal_receiver_status_interval = 10s # send replies at least this often
# 0 disables
#hot_standby_feedback = off # send info from standby to prevent
# query conflicts
#------------------------------------------------------------------...
Best way to iterate through a Perl array
.... A benchmark of the three choices might offer you insight into speed, at least.
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Python argparse: Make at least one argument required
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How does this answer the question of "at least one"?
– xaxxon
Jul 22 '19 at 19:44
2
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