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Can't use method return value in write context
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empty() needs to access the value by reference (in order to check whether that reference points to something that exists), and PHP before 5.5 didn't support references to temporary values returned from functions.
However, the real problem you have is that you use empty() at ...
How does MySQL process ORDER BY and LIMIT in a query?
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It will order first, then get the first 20. A database will also process anything in the WHERE clause before ORDER BY.
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Is there a constraint that restricts my generic method to numeric types?
...t for every type you like and use that accordingly (at compile time!).
In order to do this:
Create a new Text Template file called GenericNumberMethodTemplate.tt.
Remove the auto-generated code (you'll keep most of it, but some isn't needed).
Add the following snippet:
<#@ template languag...
Easy idiomatic way to define Ordering for a simple case class
...e class instances and I want to print them in predictable, lexicographical order using list.sorted , but receive "No implicit Ordering defined for ...".
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Is it safe to ignore the possibility of SHA collisions in practice?
...ty of such an event occurring in the next second to about 10-15. That's 45 orders of magnitude more probable than the SHA-256 collision. Briefly stated, if you find SHA-256 collisions scary then your priorities are wrong.
In a security setup, where an attacker gets to choose the messages which will...
How to fix 'sudo: no tty present and no askpass program specified' error?
...k for a password. For example in my system x11-ssh-askpass works fine.
In order to do that you have to specify what program to use, either with the environment variable SUDO_ASKPASS or in the sudo.conf file (see man sudo for details).
You can force sudo to use the askpass program by using the opti...
Why does the C# compiler not fault code where a static method calls an instance method?
...he explanation of the dynamic example of the Original Question is that, in order to be consistent, when types are dynamic we also first find the best overload (checking only parameter number and parameter types etc., not static vs. non-static), and only then check for static. But that means that the...
Limiting floats to two decimal points
...:.2f}".format(13.949999999999999)
Note 1: the above returns a string. In order to get as float, simply wrap with float(...):
float("{:.2f}".format(13.949999999999999))
Note 2: wrapping with float() doesn't change anything:
>>> x = 13.949999999999999999
>>> x
13.95
>>>...
Can a java file have more than one class?
... }
};
The Comparator class will normally require a separate file in order to be public. This way it is bundled with the class that uses it.
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How do I programmatically get the GUID of an application in .net2.0
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