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Cleaner way to update nested structures
...Person = Person(bill,21)
scala> lens[Person].namexx(()) // Compilation error
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Why java classes do not inherit annotations from implemented interfaces?
...po wasn't there), I'd expect a The field value is ambiguous.-like compiler error just like with two interfaces declaring the same constant with different values. I know that this is not a field, but annotation values get all resolved at compile time, don't they? The feature we're missing here would ...
Why does the indexing start with zero in 'C'?
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@phkahler: the error is in authors and languages calling array indices as indices; if you think of it as an offset, then 0-based becomes natural for lay person as well. Consider the clock, the first minute is written as 00:00, not 00:01 isn...
Why does this code using random strings print “hello world”?
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}
catch (IOException e) {
System.err.println("Error reading from " + fileName + ": " + e);
}
}
private static boolean isLowerAlpha (String word) {
char[] c = word.toCharArray();
for (int i = 0; i < c.length; i++) {
if (c[i]...
Undo a particular commit in Git that's been pushed to remote repos
...at does the "m" option do? I tried git revert 8213f7d but got this instead:error: Commit 8213f7dad1ed546b434a0d8a64cb783b530a5a30 is a merge but no -m option was given. fatal: revert failed
– Malcolm
Oct 2 '13 at 0:21
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Can You Get A Users Local LAN IP Address Via JavaScript?
...calDescription(sdp, noop, noop);
}).catch(function(reason) {
// An error occurred, so handle the failure to connect
});
//listen for candidate events
pc.onicecandidate = function(ice) {
if (!ice || !ice.candidate || !ice.candidate.candidate || !ice.candidate.candidate.match(i...
Understanding the map function
...your function should look for None and handle them, otherwise you will get errors. In Python 3 map() will stop after finishing with the shortest list. Also, in Python 3, map() returns an iterator, not a list.
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How do I enable C++11 in gcc?
... Makefile syntax requires tab characters, or it will give cryptic, idiotic errors. Which is why I use gmake with RECIPEPREFIX as shown in the documentation. Tab characters are an abomination; use them never.
– Parthian Shot
Aug 20 '15 at 17:34
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What Automatic Resource Management alternatives exist for Scala?
... type-safe alternative: a resource outside withResource block will be type error.
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How to parse unix timestamp to time.Time
I'm trying to parse an Unix timestamp but I get out of range error. That doesn't really makes sense to me, because the layout is correct (as in the Go docs):
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