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What is the difference between “long”, “long long”, “long int”, and “long long int” in C++?
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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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Get keys from HashMap in Java
...
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...
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...
How do I configure emacs for editing HTML files that contain Javascript?
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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...
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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Remove duplicated rows using dplyr
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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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Set timeout for ajax (jQuery)
...s. The function receives three arguments: The jqXHR (in
jQuery 1.4.x, XMLHttpRequest) object, a string describing the type of
error that occurred and an optional exception object, if one occurred.
Possible values for the second argument (besides null) are "timeout",
"error", "abort", and "pa...
In Python, how do I index a list with another list?
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