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Design patterns to avoid [closed]
...hemselves most worried about was the "Visitor" pattern.
It's a "necessary evil" - but is often over used and the need for it often reveals a more fundamental flaw in your design.
An alternative name for the "Visitor" pattern is "Multi-dispatch", because the Visitor pattern is what you end up with ...
How can I check if a program exists from a Bash script?
... to do this for hash too).
Many operating systems make which do custom and evil stuff like change the output or even hook into the package manager.
So, don't use which. Instead use one of these:
$ command -v foo >/dev/null 2>&1 || { echo >&2 "I require foo but it's not installed. ...
What's the canonical way to check for type in Python?
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Here is an example why duck typing is evil without knowing when it is dangerous.
For instance: Here is the Python code (possibly omitting proper indenting), note that this
situation is avoidable by taking care of isinstance and issubclassof functions to make sur...
Switch statement: must default be the last case?
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-1: This smells of evil to me. It would be better to split the code into a pair of switch statements.
– Jon Cage
Jun 24 '10 at 13:08
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Finalize vs Dispose
...ose is good, and implementing it correctly is generally easy. Finalize is evil, and implementing it correctly is generally hard. Among other things, because the GC will ensure that no object's identity will ever get "recycled" as long as any reference to that object exists, it's easy to cleaning u...
What is the difference between tinyint, smallint, mediumint, bigint and int in MySQL?
...10 at 16:51
ANeves thinks SE is evilANeves thinks SE is evil
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getting exception “IllegalStateException: Can not perform this action after onSaveInstanceState”
...I level 11 upwards), that's why the check ... If you believe the source of evil is the same for you too, feel free to remove the check. ABS is a different story as it runs on top of compatibility package and the implementation of support.FragmentActivity may use the same implementation of FragmentMa...
Beyond Stack Sampling: C++ Profilers
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QTMFC integration? Oh great, you've got complicated and evil, and you haven't even gotten to the application-specific code yet.
– Ben Voigt
Dec 10 '10 at 2:48
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Java Reflection Performance
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But remember the damn #1 rule--PREMATURE OPTIMIZATION IS THE ROOT OF ALL EVIL
(Well, may be tied with #1 for DRY)
I swear, if someone came up to me at work and asked me this I'd be very watchful over their code for the next few months.
You must never optimize until you are sure you need it, unt...
error: Unable to find vcvarsall.bat
...ke that. And @ThomasBrowne, I'm sure that was a painful and an unnecessary evil of an experience. I'm looking into it, and hopefully I can find something. The main issue was that Visual Studio C++ 2008 Express does not come with a 64-bit compiler, but I'm sure its around here somewhere.
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