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How can I check if a file exists in Perl?
... directory, a named pipe, a symlink, or a more exotic possibility. See the documentation for details.
Given the extension of .TGZ in your question, it seems that you expect a plain file rather than the alternatives. The -f file-test operator asks whether a path leads to a plain file.
print "$base_...
Reading/parsing Excel (xls) files with Python
...r reading .xls files.
voyager mentioned the use of COM automation. Having done this myself a few years ago, be warned that doing this is a real PITA. The number of caveats is huge and the documentation is lacking and annoying. I ran into many weird bugs and gotchas, some of which took many hours to...
How to add an object to an array
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Something doesn't seem right. Make sure there isn't a scoping problem. Use let/var to declare myArray. Because myArray.push will always mutate myArray.
– John Strickler
Mar 16 '16 at 19:14
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iPhone SDK: what is the difference between loadView and viewDidLoad?
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I can guess what might be the problem here, because I've done it:
I've found that often when I add init code to loadView, I end up with an infinite stack trace
Don't read self.view in -loadView. Only set it, don't get it.
The self.view property accessor calls -loadView if th...
Iterating over dictionaries using 'for' loops
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@yugr Why do you say that ? The docs says Keys and values are iterated over in insertion order. [docs.python.org/3/library/…
– Geza Turi
Jul 13 '19 at 15:48
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Is it possible to listen to a “style change” event?
... jQuery that can be bound to any style changes? For example, if I want to "do" something when an element changes dimensions, or any other changes in the style attribute I could do:
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Swift: Pass array by reference?
...ts , chatsViewController.chats still points to account.chats ). I.e., I don't want Swift to separate the two arrays when the length of account.chats changes.
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Making WPF applications look Metro-styled, even in Windows 7? (Window Chrome / Theming / Theme)
I like the window chrome on the new Office Suite and Visual Studio:
6 Answers
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Does Internet Explorer 8 support HTML 5?
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IE8 beta 2 supports two APIs from HTML5: cross-document messaging and non-SQL storage.
IE8 beta 2 doesn’t implement the HTML5 parsing algorithm or the new elements (no <canvas> or <video> support).
There are also bug fixes that align IE8 better with HTML5....
Determining if an Object is of primitive type
... are primitives. I've tried to use Class.isPrimitive() , but it seems I'm doing something wrong:
18 Answers
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