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Why must a lambda expression be cast when supplied as a plain Delegate parameter
...alled, your app will hang. In this case (a) some serious refactoring is in order, and (b) as a temporary hack you can wait like this:
bool wait = true;
ThreadPool.QueueUserWorkItem ((state) =>
{
//do asynch stuff
wait = false;
});
while (wait) Thread.Sleep(100);
...
If REST applications are supposed to be stateless, how do you manage sessions?
...ts, the clients store their session state and the servers can service many orders of magnitude or more clients in a stateless fashion.
Even for a service that you think will only need in the 10's of thousands of concurrent users, you still should make your service stateless. Tens of thousands is sti...
How to make a query with group_concat in sql server [duplicate]
...AX)'), 1, 1, '')
FROM dbo.tblmask m
JOIN dbo.school s ON s.ID = m.schoolid
ORDER BY m.maskname
Additional information:
String Aggregation in the World of SQL Server
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How to select the rows with maximum values in each group with dplyr? [duplicate]
...g of A and B values.
group_by( A, B) %>%
# Sort rows in descending order by "value" column.
arrange( desc(value) ) %>%
# Pick the top 1 value
slice(1) %>%
# Remember to ungroup in case you want to do further work without grouping.
ungroup()
# Answering an extension of the ...
Where do I find the bashrc file on Mac?
...ks='du -cks * | sort -rn | head -15'
# Source global definitions
if [ -f /etc/bashrc ]; then
. /etc/bashrc
fi
PATH=$PATH:/home/username/bin:/usr/local/homebrew
export PATH
If you create your own .bashrc file make sure that the following line is in your ~/.bash_profile
# Get the aliases and ...
Meaning of numbers in “col-md-4”,“ col-xs-1”, “col-lg-2” in Bootstrap
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looping through an NSMutableDictionary
...] to get an NSArray of your values. Be aware that it doesn't guarantee any order between calls.
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Load view from an external xib file in storyboard
...ther than the original class. It doesn't actually have to be a subclass in order for this to work, but making it a subclass is what allows IB to see any IBInspectable/IBOutlet properties.
This extra boilerplate might seem suboptimal—and in a sense it is, because ideally UIStoryboard would handle ...
SSL certificate is not trusted - on mobile only [closed]
...ates on your server (and not only one) and these need to be in the correct order. If they are there but not in the correct order, the website will be fine on desktop browsers (an iOs as well I think), but android is more strict about the order of certificates, and will give an error if the order is ...
How can I get a view's current width and height when using autolayout constraints?
...implement the entire constraint-solving logic of the auto layout system in order to interpret those constraints. Instead, what you should do is just ask auto layout to update that layout, so that it solves the constraints and updates the value of view.bounds with the correct solution, and then you i...