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How to configure MongoDB Java driver MongoOptions for production use?
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Updated to 2.9 :
autoConnectRetry simply means the driver will automatically attempt to reconnect to the server(s) after unexpected disconnects. In production environments you usually want this set to true.
connectionsPerHost are the amount of physical connections a single Mongo instance (it's si...
How to limit google autocomplete results to City and Country only
... as as a two character, ISO 3166-1 Alpha-2 compatible country code.
Officially assigned country codes
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Exporting a function in shell
...n parent shell (bash, sh or ksh) so that the function will be available to all the child process launced from the parent process?
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How to check if a String is numeric in Java
...ces in the string. Another way is to use NumberUtils.isParsable which basically checks the number is parsable according to Java. (The linked javadocs contain detailed examples for each method.)
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How to get first character of string?
...le what you say is true, unfortunately charAt() without any parameters actually runs about 10x slower than chartAt(0) in Firefox as of Firefox 71. See for yourself here: jsperf.com/testing-the-first-character-in-a-string/1
– Stephen M Irving
Dec 16 '19 at 21:54...
What is the point of the diamond operator () in Java 7?
The diamond operator in java 7 allows code like the following:
7 Answers
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What are the precise rules for when you can omit parenthesis, dots, braces, = (functions), etc.?
...can omit dot when using the prefix, infix and postfix notations -- the so called operator notation. While using the operator notation, and only then, you can omit the parenthesis if there is less than two parameters passed to the method.
Now, the operator notation is a notation for method-call, whi...
How to organize large R programs?
...l as a means for namespaces.
Just running source() over code works for really short snippets. Everything else should be in a package -- even if you do not plan to publish it as you can write internal packages for internal repositories.
As for the 'how to edit' part, the R Internals manual has ex...
Formatting floats without trailing zeros
...ptimization is bad, but it's because the OP's trick requires you to remove all zeroes THEN all decimals and then NOT MORE ZEROS. Gabriel's approach just removes all zeros and periods until it hits something else.
– Scott Stafford
May 11 at 14:47
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When should TaskCompletionSource be used?
AFAIK, all it knows is that at some point, its SetResult or SetException method is being called to complete the Task<T> exposed through its Task property.
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