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Possibility of duplicate Mongo ObjectId's being generated in two different collections?
...ction.
There are three solutions to this:
You can unset() the _id field from the array
You can reinitialize the entire array with array() each time you loop through your dataset
You can explicitly define the _id value yourself (taking care to define it in such a way that you don't generate dups y...
Download multiple files as a zip-file using php
... echo $path = "uploadpdf/".$file;
if(file_exists($path)){
$zip->addFromString(basename($path), file_get_contents($path));
}
else{
echo"file does not exist";
}
}
$zip->close();
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Mongoose: Get full list of users
...
Well, if you really want to return a mapping from _id to user, you could always do:
server.get('/usersList', function(req, res) {
User.find({}, function(err, users) {
var userMap = {};
users.forEach(function(user) {
userMap[user._id] = user;
});
...
Position absolute but relative to parent
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Count number of objects in list [closed]
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c++ boost::multi_index composite keys efficiency - c++1y / stl - 清泛IT社区，为创新赋能！
...ease ask questions and I will try my best to clarify exactly what I mean!
From：http://stackoverflow.com/questio ... ite-keys-efficiency
Lookups involving composite keys do not go through any two-stage process as you describe. composite_key-induced orderings are normal orderings, the only special...
Technically what is the main difference between Oracle JDK and OpenJDK? [duplicate]
...orm across both now... In the end switching to Apache HttpClient saved me from having to install Oracle JDK. Another instance: OpenJDK 8 doesn't support TLS_ECDHE cipher suites, though it does support TLS_DHE. It's a bummer, but I'll sacrifice some CPU to keep my EC2 deployments simpler
...
Is an array an object in java
...ugh I might add that, strictly speaking, an array is an object in C++ too. From §1.8 [intro.object] of the current standard (FDIS):
An object is a region of storage.
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Run Java Code Online [closed]
...for opening the projects sidebar seem to be CTRL+RIGHT which I use to jump from word to word and it makes the sidebar come and go all the time!
– Stefano
May 9 '12 at 1:41
add...
Android Left to Right slide animation
...ndroid"
android:shareInterpolator="false">
<translate android:fromXDelta="-100%" android:toXDelta="0%"
android:fromYDelta="0%" android:toYDelta="0%"
android:duration="700"/>
</set>
This is for right to left animation:
<set xmlns:android="http://s...