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What are the effects of exceptions on performance in Java?
..., is just too long to post here. So let me summarize here and refer you to http://www.fuwjax.com/how-slow-are-java-exceptions/ for the gritty details.
The real question here is not "How slow are 'failures reported as exceptions' compared to 'code that never fails'?" as the accepted response might h...
Skip certain tables with mysqldump
...mant.
More information of how to use the exclude option you can read here: https://dev.mysql.com/doc/refman/5.7/en/mysqlpump.html#mysqlpump-filtering
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C++ equivalent of java's instanceof
...{
return dynamic_cast<const Base*>(ptr) != nullptr;
}
Example: http://cpp.sh/6qir
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Get keys from HashMap in Java
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Check this.
https://docs.oracle.com/javase/8/docs/api/java/util/HashMap.html
(Use java.util.Objects.equals because HashMap can contain null)
Using JDK8+
/**
* Find any key matching a value.
*
* @param value The value to be matched...
Remove duplicated rows using dplyr
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
Can I query MongoDB ObjectId by date?
...var objectId = new ObjectID(); // or ObjectId in the mongo shell
Source: http://mongodb.github.io/node-mongodb-native/api-bson-generated/objectid.html
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How do I configure emacs for editing HTML files that contain Javascript?
...
Another solution is multi-web-mode:
https://github.com/fgallina/multi-web-mode
which may be more easily configurable than the already mentioned multi-mode.
You just configure your preferred modes in your .emacs file like this:
(require 'multi-web-mode)
(setq...
In Python, how do I index a list with another list?
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How do you convert a time.struct_time object into a datetime object?
... 0, 0, 1, -1). I have encountered this after parsing the Date header on an HTTP request which returned this tuple.
– user3820547
Jul 9 '14 at 14:20
3
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Java regex email
First of all, I know that using regex for email is not recommended but I gotta test this out.
20 Answers
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