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mongoDB/mongoose: unique if not null
...ngoDB v1.8+ you can get the desired behavior of ensuring unique values but allowing multiple docs without the field by setting the sparse option to true when defining the index. As in:
email : {type: String, trim: true, index: true, unique: true, sparse: true}
Or in the shell:
db.users.ensureIn...
How can I read and parse CSV files in C++?
I need to load and use CSV file data in C++. At this point it can really just be a comma-delimited parser (ie don't worry about escaping new lines and commas). The main need is a line-by-line parser that will return a vector for the next line each time the method is called.
...
Setting log level of message at runtime in slf4j
...j that can be efficiently mapped to the Level (or equivalent) type used in all of the possible logging implementations behind the facade. Alternatively, the designers decided that your use-case is too unusual to justify the overheads of supporting it.
Concerning @ripper234's use-case (unit testing...
Checking the equality of two slices
...swer, and more highly voted is simply maddening...
– allyourcode
Feb 12 '15 at 7:54
5
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AngularJS - Value attribute on an input text box is ignored when there is a ng-model used?
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Vojta described the "Angular way", but if you really need to make this work, @urbanek recently posted a workaround using ng-init:
<input type="text" ng-model="rootFolders" ng-init="rootFolders='Bob'" value="Bob">
https://groups.google.com/d/msg/angular/Hn3eztNHFXw...
jQuery UI DatePicker to show month year only
I am using jQuery date picker to display the calendar all over my app. I want to know if I can use it to display the month and year (May 2010) and not the calendar?
...
Long Press in JavaScript?
... Wouldn't this fire on a drag as well?
– Gallal
Aug 9 '12 at 17:18
11
@Gallal Presumab...
Is !important bad for performance?
...
It shouldn't have any effect upon the performance really. Seeing firefox's CSS parser at /source/layout/style/nsCSSDataBlock.cpp#572 and I think that is the relevant routine, handling overwriting of CSS rules.
it just seems to be an simple check for "important".
if (aIsImp...
Express.js: how to get remote client address
...proxy server does not relay the information on where the request was originally. In this case, there would be no way to find out where the request was originally from. You need to modify configuration of the proxy server first.
For example, if you use nginx as your reverse proxy, you may need to a...
How to define static property in TypeScript interface
...ce Date {
MinValue: Date;
}
Date.prototype.MinValue = new Date(0);
Called using:
var x = new Date();
console.log(x.MinValue);
And if you want to make it available without an instance, you also can... but it is a bit fussy.
interface DateStatic extends Date {
MinValue: Date;
}
Date['M...