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mongoDB/mongoose: unique if not null
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As of MongoDB v1.8+ you can get the desired behavior of ensuring unique values but allowing mult...
Open a file with su/sudo inside Emacs
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edited May 9 '13 at 3:44
answered Sep 19 '08 at 2:17
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Remove characters from NSString?
... Mundi
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answered May 29 '09 at 12:45
Tom JefferysTom Jefferys
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What is the mouse down selector in CSS?
...ticed that buttons and other elements have a default styling and behave in 3 steps: normal view, hover/focus view and mousedown/click view, in CSS I can change the styling of normal view and hover view like this:
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Cordova 3.5.0 Install Error- Please Install Android Target 19
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183
Android SDK is not your target Android version. Target Android version 19 is the API level for a...
Why can lambdas be better optimized by the compiler than plain functions?
...in = f(*begin);
}
Calling it with a lambda like this:
int a[] = { 1, 2, 3, 4 };
map(begin(a), end(a), [](int n) { return n * 2; });
Results in this instantiation (created by the compiler):
template <>
void map<int*, _some_lambda_type>(int* begin, int* end, _some_lambda_type f) {
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React.js: Wrapping one component into another
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3 Answers
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Change SQLite default settings
...ome directory of the user running sqlite.
(P.S. I found that in man sqlite3.)
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Java variable number or arguments for a method
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edited Oct 20 '17 at 1:43
ErikE
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Creating Multifield Indexes in Mongoose / MongoDB
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answered Sep 24 '12 at 22:53
JohnnyHKJohnnyHK
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