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Differences between fork and exec
...d process (parent) as its parent PID (PPID). Because the two processes are now running exactly the same code, they can tell which is which by the return code of fork - the child gets 0, the parent gets the PID of the child. This is all, of course, assuming the fork call works - if not, no child is c...
How to copy commits from one branch to another?
... Thanks for the support, and the extra info on why not to cherry-pick - I know I skimped a little there. @gotgenes: Thanks! I think it's totally worth the effort - just look at the git-rebase manpage. There's no better way to explain it.
– Cascabel
Mar 19 '10 a...
change type of input field with jQuery
...nted as part of the browser's security model.
Edit: indeed, testing right now in Safari, I get the error type property cannot be changed.
Edit 2: that seems to be an error straight out of jQuery. Using the following straight DOM code works just fine:
var pass = document.createElement('input');
pa...
SQLite in Android How to update a specific row
I've been trying to update a specific row for a while now, and it seems that there are two ways to do this. From what I've read and tried, you can just use the:
...
Capture keyboardinterrupt in Python without try-except
... except KeyboardInterrupt:
# do nothing here
pass
(Yes, I know that this doesn't directly answer the question, but it's not really clear why needing a try/except block is objectionable -- maybe this makes it less annoying to the OP)
...
Can javax.persistence.Query.getResultList() return null?
...t it right?
No matter what, I would code defensively and check for null.
Now the big question: should we treat "null" and an empty List as synonymous? This is where the specs should help us, and don't.
My guess is that a null return (if indeed it could happen) would be equivalent to "I didn't un...
How can I check for NaN values?
...still in common use - and math.isnan was not part of the standard library. Now days I'm really hoping that's not the case in many places!
– mavnn
Mar 30 '15 at 7:30
4
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Call Go functions from C
...me progress info to the user whenever it gets called. Since it has a well known signature, we can assign it its own type:
type ProgressHandler func(current, total uint64, userdata interface{}) int
This handler takes some progress info (current number of files received and total number of files) a...
How to modify a specified commit?
...et HEAD^". that will put the modified files of that commit into the stage. Now pick and commit any files as you wish. This flow is quite well explained in "git-rebase" man page. See section "Splitting commits". bit.ly/d50w1M
– Diego Pino
Mar 15 '10 at 19:18
...
Differences in boolean operators: & vs && and | vs ||
I know the rules for && and || but what are & and | ? Please explain these to me with an example.
11 Ans...