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'. /my_module '; // It can be simply understood as import {Foo, bar} from '. /my_module '; export {Foo, bar}; // 2. Export List export {detectcats, kittydar}; // No 'export' keyword required here function detectcats (canvas, options) {...} class kittydar {...} // 3. Rename Export and Import {flip as flipomelet} from "eggs. JS "; import {flip as fliphouse} from" real-estate.js" Function V1 () {...} function V2 (){...} Export {v1 as streamv1, v2 as streamv2, v2 as streamlatestversion}; // 4. Defa

described in another blog post)Write to the Fdt file:The basic unit of the FDT file is chunk, which needs to be kept in mind. The code for a chunk write to the file is as follows:By observing the flush function, we find that the Fdt file is very simple to write, with two lines of code:The previous line of code records the entire chunk in docbase (minimum docid), Numbuffereddocs (Doc number), Numstoredfields (Number of field per Doc), lengths (length per Doc), There are four kinds of information

//array de-weight{Const ARR= [1,2,3,4,1,23,5,2,3,5,6,7,8,undefined,NULL,NULL, Undefined,true,false,true, ' Chinese ', ' ', ' ', ' hello ', ' Chinese ']; //First KindConst R = [...NewSet (arr)]; Console.log (R); //[1, 2, 3, 4, 23°c, 5, 6, 7, 8, undefined, NULL, True, False, "Chinese", "", "Hello"] //The second KindConst R = Arr.reduce ((all,name) = All.includes (name)?All : [... all,name],[]); Console.log (R); //[1, 2, 3, 4, 23°c, 5, 6, 7, 8, undefined, NULL, True, False, "Chinese", "", "Hel

Private voidGetmappingbyindex (String indices)throwsIOException {getmappingsrequest getmappingsrequest=Newgetmappingsrequest (); Getmappingsrequest.indices (indices). Types (NewString[0]); Getmappingsresponse Response=client.admin (). Indices (). Getmappings (Getmappingsrequest). Actionget (); Immutableopenmapresponse.getmappings (); for(ObjectobjectcursorIndexentry:mappingsbyindex) { if(IndexEntry.value.isEmpty ()) {Continue; } System.out.println (Indexentry.key); for(Ob

CP from:https://www.cnblogs.com/ricoliu/p/5996149.htmlMet with a puzzle that was originally called ES6, and now suddenly becomes es2015.The reason for this is the sixth change in ecma-262, all formerly known as ES6.But in order to be released frequently for smaller versions, it is now the standard term: Esmascrip 2015Baidu Information:As of the release date, the official name of JavaScript is ECMAScript 2015,ECMA International is intended to publish a new version with small incremental updates m

Reserved for three days only#!/usr/bin/env Python3#-*-coding:utf-8-*-ImportOSImportdatetime#time into a stringNow_time= Datetime.datetime.now (). Strptime (Datetime.datetime.now (). Strftime ("%y.%m.%d"),"%y.%m.%d") Os.system ("curl-xget http://127.0.0.1:9200/_cat/indices > Date.txt") with open ("Date.txt","R") as F: forLineinchf.readlines (): Index= Line.strip (). Split () [2] Try: Index_strftime= Datetime.datetime.strptime (Index.split ("-") [-1],"%y.%m.%d") Ca= (Now_time-index_strftime

Doc values in memory are constrained by the heap, and horizontal scaling can solve this problem in some cases, but you will find that even after you expand the node, the heavy agg will spend your heap space when the other nodes are not fully utilized. The default fielddata is written to memory, but this is not the only option, it can be written to the hard disk, and it can achieve the same functionality, but not in-memory fielddata but docvalue on the hard disk. Doc value was added to the 1.0 un

Tags: window sync doc png pip GES build BSP Connect1. The MongoDB replica set environment is completed 2. Start the installation of Mongo-connector Pip install Mongo-connector; based on the PIP command, the Python environment is default for Linux and window systems; 3. Installation Pip Install Elastic-doc-manager 4. Input command Mongo-connector-m 192.168.100.10:20006-t 192.168.198.223:9200-d Elastic_doc_manager As below, prove the success of the start: -m:mongodb address and port, port defau

Hey hey... Google has acquired Moto mobile... this doesn't mean that another apple has appeared... it's time to capture android... When I used to play Android, I transplanted several libraries. freeimage FreeType Tokamak to Android. Through ndk ..

1. Four pyramid: consisting of 4 triangles. Square Body: composed of 6 triangles. Difficulty: When building the vertex coordinates of a 3D space, you must always have the center coordinate of the object (0.0f,0.0f,0.0f) to rotate the object around

Elasticsearch-hadoop provides local integration of Elasticsearch with Apache Spark. The data read from Elasticsearch is operated in the form of Rdd in Spark, while the contents of spark Rdd can be converted into documents and stored in Elasticsearch

Due to my recent reading of h264 files, I encountered the problem of how to read the full frame data, through the use of Elecard Stream Analyzer tools, as well as the combination of "new generation of video compression coding standard--H264/AVC"

1. Rotation function: GlRotatef (float angle, float X, float Y, float Z) Angle specifies the Rotation angle of an object. The X, Y, and Z parameters jointly determine the direction of the rotation axis. That is, the glRotatef function rotates the

1. rotation function: glRotatef (float angle, float X, float Y, float Z). angle specifies the angle of rotation of the object. Parameters X, Y, and Z jointly determine the direction of the rotation axis. That is, the glRotatef function rotates the

Elasticsearch pulls mysql incremental update code based on open-source plug-ins. See http://my.oschina.net/qiangzigege/blog/220224 for details ~~~~~~ Objective: to implement incremental update Principle 1) This task is deleted after the first

Overview Fast solution to 10/100/M Ethernet (full-duplex access supported) Go deep into 802.11a/B/g wireless LAN Analyze network traffic Search for devices, networks, VLANs, access points, and mobile users. Measure Internet connection

Npot texture:non-power-of-two Texture.Rectangle Texture:non-square (Height! = wdith)When testing the SAMSUMG Galaxy S4, it was found that rectangle texture support was not good, although the creation was successful, but the drawing was problematic.A

1.array.from ()The Array.from method is used to convert two types of objects into real arrays: arrays-like objects and Ergodic (iterable) objects.Here is an array-like object, Array.from it into a true array.As long as the data structure of the

：Https://www.elastic.co/downloadsVersion: logstash-2.2.2Two Linux virtual machines, one Windows hostshipper:192.168.220.128 (CENTOS7)indexer:192.168.220.129 (CENTOS7)Broker (redis2.6): 192.168.220.1 (Windows) deploys a elasticsearch-1.6.0Shipper

Deconstruction Assignment of variables1. parentheses usevar [(a)] = [1];　　//报错，变量声明语句中，不能带有圆括号。[(a)] = [1];　　　　//正确，模式是取数组的第一个成员，跟圆括号无关。2. Traverse the map structureAny object that has the iterator interface deployed can be for...of traversed with