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Can I use GDB to debug a running process?
...command may take as argument a process id, a process name
(with an optional process-id as a suffix), or a device file.
For a process id, you must have permission to send the process a signal,
and it must have the same effective uid as the debugger.
When using "attach" to an existing process,...
How to convert a JSON string to a Map with Jackson JSON
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[Update Sept 2020] Although my original answer here, from many years ago, seems to be helpful and is still getting upvotes, I now use the GSON library from Google, which I find to be more intuitive.
I've got the following code:
public void test...
Regular expression to match URLs in Java
...d pasted it into Java code, it does not work. The following class prints false :
8 Answers
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Why does this iterative list-growing code give IndexError: list assignment index out of range?
...or l in i:
j.append(l)
Of course, you'd never do this in practice if all you wanted to do was to copy an existing list. You'd just do:
j = list(i)
Alternatively, if you wanted to use the Python list like an array in other languages, then you could pre-create a list with its elements set to ...
find -exec with multiple commands
...and will only run if the first one returns successfully, as mentioned by @Caleb. If you want both commands to run regardless of their success or failure, you could use this construct:
find . -name "*.txt" \( -exec echo {} \; -o -exec true \; \) -exec grep banana {} \;
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Why aren't my breakpoints working?
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First of all, I agree 100% with the earlier folks that said turn OFF Load Symbols Lazily.
I have two more things to add.
(My first suggestion sounds obvious, but the first time someone suggested it to me, my reaction went along thes...
How can I recover a removed file in Mercurial (if at all)?
Accidentally, by using a GUI as opposed to CLI, I removed every file in a Mercurial project.
9 Answers
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Print “hello world” every X seconds
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You can also take a look at Timer and TimerTask classes which you can use to schedule your task to run every n seconds.
You need a class that extends TimerTask and override the public void run() method, which will be executed everyt...
Changing the browser zoom level
...would say not possible in most browsers, at least not without some additional plugins. And in any case I would try to avoid relying on the browser's zoom as the implementations vary (some browsers only zoom the fonts, others zoom the images, too etc). Unless you don't care much about user experience...
.NET XML serialization gotchas? [closed]
I've run into a few gotchas when doing C# XML serialization
that I thought I'd share:
19 Answers
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