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Why does this loop produce “warning: iteration 3u invokes undefined behavior” and output more than 4
...ndefined behaviour. And this means anything can happen, and discussing why does it happen under the rules of C++ doesn't make sense.
C++11 draft N3337: §5.4:1
If during the evaluation of an expression, the result is not mathematically defined or not in the range of
representable values for ...
How to clone ArrayList and also clone its contents?
... putting the clones in your result array as you go.
public static List<Dog> cloneList(List<Dog> list) {
List<Dog> clone = new ArrayList<Dog>(list.size());
for (Dog item : list) clone.add(item.clone());
return clone;
}
For that to work, obviously, you will have ...
Mongoose, Select a specific field with find
...
The _id field is always present unless you explicitly exclude it. Do so using the - syntax:
exports.someValue = function(req, res, next) {
//query with mongoose
var query = dbSchemas.SomeValue.find({}).select('name -_id');
query.exec(function (err, someValue) {
if (err...
Using TortoiseSVN how do I merge changes from the trunk to a branch and vice versa?
...erly follow the other answers, here's more of a dummies guide...
You can do this either way round to go trunk -> branch or branch -> trunk. I always first do trunk -> branch fix any conflicts there and then merge branch -> trunk.
Merge trunk into a branch / tag
Checkout the branch /...
How to avoid isset() and empty()
...er languages balk at this at compile time. The fact that PHP allows you to do it doesn't mean you should.
These warnings are there to help you, not to annoy you. If you get a warning "You're trying to work with something that doesn't exist!", your reaction should be "Oops, my bad, let me fix that A...
Programmatically get own phone number in iOS
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How does Snapchat do it?
– rgbrgb
Feb 7 '13 at 2:34
1
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How do I embed a single file from a GitHub gist with the new gist interface?
...og posts now it is spitting out all the files in the gist where it used to do individual ones! I think I am going to have to split my files into individual gists :( Is anyone else experiencing this?
– nootn
Feb 5 '13 at 11:18
...
How do you clear a slice in Go?
...r slice []T
then enforcing len(slice) to be zero, by the above "trick", doesn't make any element of
slice[:cap(slice)]
eligible for garbage collection. This might be the optimal approach in some scenarios. But it might also be a cause of "memory leaks" - memory not used, but potentially reacha...
How do I update the notification text for a foreground service in Android?
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I have downvoted this answer as it is clearly plain wrong: developer.android.com/training/notify-user/managing.html Please @CommonsWare consider removing this answer, as your high reputation score makes this answer the "holy truth" ...
Converting newline formatting from Mac to Windows
... that will convert a .sql dump file generated on Mac to one readable on Windows. This is a continuation of a problem I had here . The issue seems to be with newline formatting in text files, but I can't find a tool to make the conversion...
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