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Get the latest record from mongodb collection
...option $natural is not supported' on server docdb. Hopefully that feature comes soon.
– Marc
Apr 12 '19 at 18:58
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...
Is there a performance difference between a for loop and a for-each loop?
...and the opportunity for error by
hiding the iterator or index variable
completely. The resulting idiom
applies equally to collections and
arrays:
// The preferred idiom for iterating over collections and arrays
for (Element e : elements) {
doSomething(e);
}
When you see the colon ...
Update MongoDB field using value of another field
...bre.firstName + ' ' + hombre.lastName;
db.person.save(hombre);
});
http://docs.mongodb.org/manual/reference/method/cursor.snapshot/
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云数据及Firebase组件简介 · App Inventor 2 中文网
...ction() { var hm = document.createElement("script"); hm.src = "https://hm.baidu.com/hm.js?8d287b854d737bdc880e8ddeac1b309d"; var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(hm, s); })();
云数据...
IOException: read failed, socket might closed - Bluetooth on Android 4.3
..., I guess the second 4.3 update). I have seen some related postings (e.g. https://stackoverflow.com/questions/13648373/bluetoothsocket-connect-throwing-exception-read-failed ), but none seems to provide a workaround for this issue. Also, as suggested in these threads, re-pairing does not help, and ...
Spring .properties file: get element as an Array
...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...
Converting string from snake_case to CamelCase in Ruby
...
Source: http://rubydoc.info/gems/extlib/0.9.15/String#camel_case-instance_method
For learning purpose:
class String
def camel_case
return self if self !~ /_/ && self =~ /[A-Z]+.*/
split('_').map{|e| e.capitalize}....
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...
How to convert an enum type variable to a string?
...
// ADD_PARENTHESES_FOR_EACH_TUPLE_IN_SEQ implementation is taken from:
// http://lists.boost.org/boost-users/2012/09/76055.php
//
// This macro do the following:
// input:
// (Element1, "Element 1 string repr", 2) (Element2) (Element3, "Element 3 string repr")
// output:
// ((Element1, "E...
jQuery find events handlers registered with an object
...
blog.jquery.com/2011/11/08/building-a-slimmer-jquery .data(“events”): jQuery stores its event-related data in a data object named (wait for it) events on each element. This is an internal data structure so in 1.8 this will be removed...