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What does $_ mean in PowerShell?
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It's not necessarily related to the pipeline. It's more a "current argument to the currently executing script block". For example while you can use it just fine in ForEach-Object or Where-Object you can't use it in something like Get-Foo|Add-Member NoteProperty Bar ($_.SomePr...
SQL - HAVING vs. WHERE
... HAVING after GROUP BY. It is a rather primitive rule, but it is useful in more than 90% of the cases.
While you're at it, you may want to re-write your query using ANSI version of the join:
SELECT L.LectID, Fname, Lname
FROM Lecturers L
JOIN Lecturers_Specialization S ON L.LectID=S.LectID
GROUP ...
Make a UIButton programmatically in Swift
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Can I read the hash portion of the URL on my server-side application (PHP, Ruby, Python, etc.)?
...document.writeln(txthash);</script>";
echo $hash;
?>
To make it more fluent:
Full Example using just Javascript and PHP
<script>
var urlhash = window.location.hash, //get the hash from url
txthash = urlhash.replace("#", ""); //remove the #
function changehash(a,b){
window.lo...
How to filter files when using scp to copy dir recursively?
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Eclipse error: indirectly referenced from required .class files?
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How do you remove the title text from the Android ActionBar?
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ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'db'
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Android-java- How to sort a list of objects by a certain value within the object
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