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LINQ - Left Join, Group By, and Count
...mpty()
group j2 by p.ParentId into grouped
select new { ParentId = grouped.Key, Count = grouped.Count(t=>t.ChildId != null) }
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How to get process ID of background process?
I start a background process from my shell script, and I would like to kill this process when my script finishes.
7 Answers...
Assign output of os.system to a variable and prevent it from being displayed on the screen [duplicat
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From "Equivalent of Bash Backticks in Python", which I asked a long time ago, what you may want to use is popen:
os.popen('cat /etc/services').read()
From the docs for Python 3.6,
This is implemented using subprocess.Popen; see that class’s
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How do I get a file name from a full path with PHP?
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You're looking for basename.
The example from the PHP manual:
<?php
$path = "/home/httpd/html/index.php";
$file = basename($path); // $file is set to "index.php"
$file = basename($path, ".php"); // $file is set to "index"
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SQL selecting rows by most recent date
Using the following query and results, I'm looking for the most recent entry where the ChargeId and ChargeType are unique.
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How do I declare an array of weak references in Swift?
I'd like to store an array of weak references in Swift. The array itself should not be a weak reference - its elements should be. I think Cocoa NSPointerArray offers a non-typesafe version of this.
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The modulo operation on negative numbers in Python
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Unlike C or C++, Python's modulo operator (%) always return a number having the same sign as the denominator (divisor). Your expression yields 3 because
(-5) / 4 = -1.25 --> floor(-1.25) = -2
(-5) % 4 = (-2 × 4 + 3) % 4 = 3...
Update git commit author date when amending
...o, especially when I want to save what I did before I leave or before a weekend, so I do a "draft" commit. Only thing is, when I amend the commit, it is still set to the original author date. Is there a (simple) way to update it when amending?
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Use jQuery to get the file input's selected filename without the path
....val().split('\\').pop();
or you could just do (because it's always C:\fakepath that is added for security reasons):
var filename = $('input[type=file]').val().replace(/C:\\fakepath\\/i, '')
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How to create a inset box-shadow only on one side?
...somehow only have inset box-shadow on one side of a div ? Note that I'm talking about an inset box-shadow here, not the normal outer box-shadow.
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