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Accept function as parameter in PHP
... call_user_func_array($fun,$args);
} else {
// error out
print("ERROR: Funciton not found: ". $method);
}
}
}
?>
and an example of usage
<?php
/*create a sample function*/
function sayHello($some = "all"){
?>
<br...
Copying PostgreSQL database to another server
...d the database on the new machine (But blank) I got a LOT of duplicate key errors. However, it is a dev environment and they didn't hurt anything.
– Chris Mendla
Apr 4 '19 at 3:47
...
quick random row selection in Postgres
...
This has an off by one error. It will never return the first row and will generate an error 1/COUNT(*) because it will try to return the row after the last row.
– Ian
Mar 21 '14 at 20:24
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Remove rows with duplicate indices (Pandas DataFrame and TimeSeries)
...
I tried this but could not get it to work.. I get an error like this: TypeError: 'Series' objects are mutable, thus they cannot be hashed.. Did this actually work for you?
– Onno Eberhard
Sep 3 '19 at 13:45
...
Java: Path vs File
...row exceptions when they failed, so it was
impossible to obtain a useful error message. For example, if a file
deletion failed, the program would receive a "delete fail" but
wouldn't know if it was because the file didn't exist, the user didn't
have permissions, or there was some other probl...
Can a class member function template be virtual?
... like this:
X x;
x.func2<string>("X x");
g++ report the following error:
vtempl.cpp:34: error: invalid use of `virtual' in template declaration of `virtu
al void X::func2(const T&)'
So it is obvious that:
virtual member function can be used in a class template. It is easy for compi...
Converting unix timestamp string to readable date
...to convert it to a readable date. When I use time.strftime , I get a TypeError :
15 Answers
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When is a CDATA section necessary within a script tag?
...ret the &,<,> characters in the script tag and cause XML parsing error. So, you can write your JavaScript with entities, e.g.:
if (a &gt; b) alert('hello world');
But this is impractical. The bigger problem is that if you read the page in HTML, the tag script is considered CDATA 'by...
Why Java needs Serializable interface?
... and if I weren't smart enough to try to serialize socket, I would find my error during debugging. However, now I'm in a situation when I can't use Java serialization at all because of 3rd party class which doesn't implement Serializable for no good reason.
– Yoni Roit
...
How can I find the last element in a List?
...serve to be the top answer, it reads terribly and leaves the chance for an error if count is zero. The CleanCode™ approach would be to use Last/LastOrDefault as mentioned below.
– chillitom
Dec 4 '13 at 18:04
...