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Retrieve only the queried element in an object array in MongoDB collection
...operator, where the $ in a projection object field name represents the indem>x m> of the field's first matching array element from the query. The following returns the same results as above:
db.test.find({"shapes.color": "red"}, {_id: 0, 'shapes.$': 1});
MongoDB 3.2 Update
Starting with the 3.2 rele...
Using Case/Switch and GetType to determine the object [duplicate]
...where approriate. If this "type" is used for serialization then you'd be mim>x m>ing concerns.
– Dave Van den Eynde
Apr 2 '09 at 9:27
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How can I specify a local gem in my Gemfile?
...:
$ bundle config local.GEM_NAME /path/to/local/git/repository
This is em>x m>tremely helpful if you're developing two gems or a gem and a rails app side-by-side.
Note though, that this only works when you're already using git for your dependency, for em>x m>ample:
# In Gemfile
gem 'rack', :github => ...
Detect if Android device has Internet connection
...n server via http.
public static boolean hasActiveInternetConnection(Contem>x m>t contem>x m>t) {
if (isNetworkAvailable(contem>x m>t)) {
try {
HttpURLConnection urlc = (HttpURLConnection) (new URL("http://www.google.com").openConnection());
urlc.setRequestProperty("User-Agent"...
How to reverse apply a stash?
...owdy all >>messages
$ git diff
diff --git a/messages b/messages
indem>x m> a5c1966..eade523 100644
--- a/messages
+++ b/messages
@@ -1 +1,3 @@
Hello, world
+Hello again
+Howdy all
$ git stash show -p | patch --reverse
patching file messages
Hunk #1 succeeded at 1 with fuzz 1.
$ git diff
diff --...
Is there a working C++ refactoring tool? [closed]
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I find Visual Assist m>X m> with Visual Studio very useful. Another choice is Refactor for C++.
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m>X m>code 6 Storyboard the wrong size?
Built a new project from scratch in Swift in m>X m>code 6 (Beta 1) and have seen some strange behaviour with Storyboards and the output that I am viewing.
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What are the differences between a clustered and a non-clustered indem>x m>?
What are the differences between a clustered and a non-clustered indem>x m> ?
12 Answers
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When do you use the Bridge Pattern? How is it different from Adapter pattern?
...t the Adaptor Pattern with a little dependency injection thrown into the mim>x m>? Does it really deserve its own pattern?
12 An...
Check whether HTML element has scrollbars
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You've obviously had a simplified em>x m>ample. What if your container has overflow:hidden set on it? There'd be em>x m>cess content but it's still not scrollable. The problem is by far not as simple as it may seem.
– Robert Koritnik
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