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How to force LINQ Sum() to return 0 while source collection is empty
...= ProtectedPropertyType.Password
&& l.Property.PropertyId == PropertyId)
.Select(l => l.Amount)
.DefaultIfEmpty(0)
.Sum();
This way, your query will only select the Amount field. If the collection is empty, it will return one element with the value...
Begin, Rescue and Ensure in Ruby?
...y-style resource blocks yourself:
class File
{
static T open<T>(string filename, string mode, Func<File, T> block)
{
var handle = new File(filename, mode);
try
{
return block(handle);
}
finally
{
handle.Disp...
How to delete and replace last line in the terminal using bash?
...anything, just puts the cursor at the beginning of the line. So if the new string is shorter than the old one you can see the leftover text at the end of the line. In the end tput was the best way to go. It has other uses besides the cursor stuff plus it comes pre-installed in many Linux & BSD d...
Portable way to get file size (in bytes) in shell?
...ith single fork and single exec, but it uses a temporary file for the here-string. It can be made portable by replacing the here-string with POSX-compliant here-document. BTW note the exec in the subshell. Without that, Bash performs one fork for the subshell and another one for the command running ...
How do you attach and detach from Docker's process?
... new process from the existing container:
sudo docker exec -ti [CONTAINER-ID] bash
will start a new process with bash shell, and you could escape from it by Ctrl+C directly, it won't affect the original process.
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Correct way to detach from a container without stopping it
...l functional OS. When you run a container the process you launch take the PID 1 and assume init power. So when that process is terminated the daemon stop the container until a new process is launched (via docker start) (More explanation on the matter http://phusion.github.io/baseimage-docker/#intro)...
Send email with PHPMailer - embed image in body
...e('img/2u_cs_mini.jpg', 'logo_2u');
and on the <img> tag put src='cid:logo_2u'
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RESTful Services - WSDL Equivalent
...
Thanks Joschi. I read the articles, but didn't find the second too convincing. Which points that he addresses did you find most valuable?
– skaz
Nov 6 '10 at 14:06
...
Font Awesome icon inside text input element
I am trying to insert a user icon inside username input field.
22 Answers
22
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Is there a foreach in MATLAB? If so, how does it behave if the underlying data changes?
...end
2) Loop over vector
for test = [1, 3, 4]
test
end
3) Loop over string
for test = 'hello'
test
end
4) Loop over a one-dimensional cell array
for test = {'hello', 42, datestr(now) ,1:3}
test
end
5) Loop over a two-dimensional cell array
for test = {'hello',42,datestr(now) ; 'w...