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E11000 duplicate key error index in mongodb mongoose
...es ,
I Just clear the Indexes of particular fields then its works for me .
https://docs.mongodb.com/v3.2/reference/method/db.collection.dropIndexes/
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Effective method to hide email from spam bots
...the right-to-left mark to override the writing direction. more about this: https://en.wikipedia.org/wiki/Right-to-left_mark
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Scanner vs. StringTokenizer vs. String.Split
...trading some flexibility, to get a speed-boost, which I did at JFastParser https://github.com/hughperkins/jfastparser
Testing on a string containing one million doubles:
Scanner: 10642 ms
Split: 715 ms
StringTokenizer: 544ms
JFastParser: 290ms
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How do you trigger a block after a delay, like -performSelector:withObject:afterDelay:?
...Log(@"parameter1: %d parameter2: %f", parameter1, parameter2);
});
More: https://developer.apple.com/documentation/dispatch/1452876-dispatch_after
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Reading a UTF8 CSV file with Python
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Also checkout the answer in this post:
https://stackoverflow.com/a/9347871/1338557
It suggests use of library called ucsv.py. Short and simple replacement for CSV written to address the encoding problem(utf-8) for Python 2.7. Also provides support for csv.DictRea...
Ruby: require vs require_relative - best practice to workaround running in both Ruby =1.
...d to the 'aws' gem so thought I'd share as it was inspired by this post.
https://github.com/appoxy/aws/blob/master/lib/awsbase/require_relative.rb
unless Kernel.respond_to?(:require_relative)
module Kernel
def require_relative(path)
require File.join(File.dirname(caller[0]), path.to_s...
Objective-C: Property / instance variable in category
...n), unicorn, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
For more details see https://stackoverflow.com/a/16020927/202451
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How to connect to LocalDB in Visual Studio Server Explorer?
...O
There are instructions on how to create a user for your application at https://docs.microsoft.com/en-us/sql/tools/sqllocaldb-utility
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How do you create a Swift Date object?
...y method.
A more elaborate example, which addresses both issues, is here: https://gist.github.com/algal/09b08515460b7bd229fa .
Update for Swift 5
extension Date {
init(_ dateString:String) {
let dateStringFormatter = DateFormatter()
dateStringFormatter.dateFormat = "yyyy-MM-...
NUnit Test Run Order
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NUnit 3.2.0 added an OrderAttribute, see:
https://github.com/nunit/docs/wiki/Order-Attribute
Example:
public class MyFixture
{
[Test, Order(1)]
public void TestA() { ... }
[Test, Order(2)]
public void TestB() { ... }
[Test]
public void Te...