Basic concepts of set/multiset container
Basic Concepts of set Containers
Set feature: All elements are automatically sorted according to their key values. Set elements do not have both real and key values as map does. S ...
Posted on Mon, 19 Aug 2019 03:32:21 -0700 by freakuency
What is promise?
Promise, which means to promise you a result after a period of time (usually an asynchronous operation), is a solution to asynchronous programming. Grammatically speaking, native Promise is an object from which messages for asynchronous operations can be obtained.
Characteristics of promise
The state of the object is not affect ...
Posted on Thu, 15 Aug 2019 03:14:32 -0700 by koldstar
1. Smli data types
1. Dalvik byte code
In Davlik byte codes, registers are 32-bit and can support any type. 64-bit types (Long/Double) are represented by two consecutive registers.
There are two types of Dalvik byte codes: the original type; the reference type (including objects and arrays)
v. void can only b ...
Posted on Thu, 13 Jun 2019 09:24:24 -0700 by kodstationen
1. Attribute operations
1.1 Basic Attribute Operations
$("img").attr("src") returns the SRC attribute values of all images in the document
$("img").attr("src","test.jpg") sets the SRC attribute values for all images in the document
$("img").removeAttr("src") deletes the SRC ...
Posted on Mon, 03 Jun 2019 19:15:53 -0700 by vtb
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Written in front
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IO stream is used to process data transmission between devices
Java operates on data through streaming
Java classes for operation flow are in the IO package
Flow is divided into two kinds according to flow direction: input f ...
Posted on Sun, 12 May 2019 01:38:39 -0700 by aleX_hill
First, you need to understand the relationship between the number of conf and loc output channels and priorbox generation in the original SSD. For further information, please check the blogger's two posts:
Unlike S ...
Posted on Sat, 27 Apr 2019 14:18:35 -0700 by wpsd2006
Traditional sub-database and sub-table
Traditional sub-database and sub-table are realized by application-level logic. For database level, they are common tables and libraries.
Reasons for subpooling
Firstly, when the performance of a single database server is sufficient, the sub-database has no effect on the per ...
Posted on Tue, 26 Mar 2019 14:03:28 -0700 by The Merg
I. hashcode and euqals in containers
In the Java container framework, there are Lists and Sets, where Lists allow duplicate elements, while Sets do not allow duplicate elements. How does Set handle duplicate elements here? It must be related to equals. Is equals() equal by iteration? But when the amount of data is large, if we add 10,000 elem ...
Posted on Tue, 26 Mar 2019 10:09:31 -0700 by whitelion
Reprint address: http://lobert.iteye.com/blog/1955841
A few days ago, I got a table with nearly 4000w data, no index and primary key. (Absolutely a talented person who built this watch)
This is a log table, which records the output and consumption of items in the game. There was a background to make statistics on this table. (Supercomputers are ...
Posted on Sun, 24 Mar 2019 09:48:27 -0700 by kee2ka4
See the original title for details. http://coursera.cs.princeton.edu/algs4/assignments/collinear.html
The main purpose of the program is to find the line segment in n points. The requirement of line segment is to contain no less than four points.
The job consists of three parts of program implementation:
CompareeTo () is used to compa ...
Posted on Sat, 09 Feb 2019 19:09:20 -0800 by mimintweak