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How to know if an object has an attribute in Python
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Try hasattr():
if hasattr(a, 'property'):
a.property
EDIT: See zweiterlinde's answer below, who offers good advice about asking forgiveness! A very pythonic approach!
The general practice in python is that, if the property is likely to be there most of the time, simply call it ...
Best way to clear a PHP array's values
...Like Zack said in the comments below you are able to simply re-instantiate it using
$foo = array(); // $foo is still here
If you want something more powerful use unset since it also will clear $foo from the symbol table, if you need the array later on just instantiate it again.
unset($foo); // ...
Is JavaScript an untyped language?
...ynamically, weakly typed" language, but some even say "untyped"? Which is it really?
7 Answers
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Find the last element of an array while using a foreach loop in PHP
I am writing a SQL query creator using some parameters. In Java, it's very easy to detect the last element of an array from inside the for loop by just checking the current array position with the array length.
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Why doesn't JUnit provide assertNotEquals methods?
Does anybody know why JUnit 4 provides assertEquals(foo,bar) but not assertNotEqual(foo,bar) methods?
11 Answers
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How to align checkboxes and their labels consistently cross-browsers
... baseline on the input ), they're completely off in Firefox and IE. Fix it in Firefox, and Safari and IE are inevitably messed up. I waste time on this every time I code a form.
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Error handling in C code
What do you consider "best practice" when it comes to error handling errors in a consistent way in a C library.
22 Answers
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How to Sync iPhone Core Data with web server, and then push to other devices? [closed]
...iPad or a Mac. There are not many (if any at all) sync frameworks for use with Core Data on iOS. However, I have been thinking about the following concept:
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Can you nest html forms?
Is it possible to nest html forms like this
20 Answers
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TypeError: 'NoneType' object is not iterable in Python
What does error TypeError: 'NoneType' object is not iterable mean?
7 Answers
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