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Using Application context everywhere?
...wer. I think I'll use this approach solely for the persistence layer (as I don't want to go with content providers). Wondering what was the motivation behind designing SQLiteOpenHelper in a way that expects a Context to be supplied instead of acquiring it from Application itself. P.S. And your book ...
How to force garbage collection in Java?
...s it possible to force garbage collection in Java, even if it is tricky to do? I know about System.gc(); and Runtime.gc(); but they only suggest to do GC. How can I force GC?
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How to check if all of the following items are in a list?
...erent than "less than or equal to". It's unusual for the standard library does this--it smells like legacy API to me.
Use the equivalent and more clearly-named method, set.issubset. Note that you don't need to convert the argument to a set; it'll do that for you if needed.
set(['a', 'b']).issubs...
Dialog throwing "Unable to add window — token null is not for an application” with getApplication()
... Actually, as Listener classes are often anonymous-inner, I tend to just do final Context ctx = this; and I'm away ;)
– Alex
Sep 11 '11 at 16:00
28
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C# Float expression: strange behavior when casting the result float to int
...nt rounding (it's actually the value 61.99999809265137 when expressed as a double) and that your question is only about why two seemingly identical computations result in the wrong value.
The answer is that in the case of (int)(6.2f * 10), you are taking the double value 61.99999809265137 and trunc...
Simple way to copy or clone a DataRow?
...nal Row are then free to change but we still have another saved copy which doesn't change. Is this the correct way to do it?
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How can I visualize per-character differences in a unified diff file?
...modified, but I cannot see which characters in the changed lines differ. Does anyone know a way (in Vim, or some other free software that runs on Ubuntu) to visualize per-character differences?
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Python loop counter in a for loop [duplicate]
...
I'll sometimes do this:
def draw_menu(options, selected_index):
for i in range(len(options)):
if i == selected_index:
print " [*] %s" % options[i]
else:
print " [ ] %s" % options[i]
Though I te...
Whether a variable is undefined [duplicate]
How do I find if a variable is undefined?
5 Answers
5
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How to copy files across computers using SSH and MAC OS X Terminal [closed]
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You can do this with the scp command, which uses the ssh protocol to copy files across machines. It extends the syntax of cp to allow references to other systems:
scp username1@hostname1:/path/to/file username2@hostname2:/path/to/ot...