correctness. Use the following code for testing:Var a1 = new aaa ("red ");Var a2 = new aaa ("green ");Console. dir (a1 );Console. dir (a2 );Console. log (a1. _ proto _ = a2. _ proto _); // Output true
Now let's talk about the second constructor. When using this function to create the first instance or directly call this function (it will pollute the Global Object) the prototype of the function will be assi
172.16.0.0/16 block in quick on hme0 from 192.168.0.0/24 to any block in quick on hme0 from 172.16.0.0 /16 to any pass in all after applying this rule, all packets from 192.168.0.0 and 172.16.0.0 through the hme0 port will be blocked from entering and going out, however, allow packages of other network segments to enter the firewall without any restrictions on the outgoing packets. Use the "proto" keyword to control specific protocols: block in log q
A deep understanding of prototype, getprototypeof and _ proto _
Prototype,getpropertyof and _ proto _ are three methods used to access the prototype. They are named in a similar way so it is easy to confuse.
They are used in the following ways:
C.prototype: Typically used to build its prototype inheritance object for a type. For example, C.prototype = xxx, this will let the object using new C () th
Let's take a look at this section.
Code :
Copy code The Code is as follows:
A very simple piece of code. Let's see what new has done? We can split the new process into the following three steps:
The key lies in the second step. Let's prove it:Copy codeThe Code is as follows:
This code returns true. It indicates that step 2 is correct.
So what is _ PROTO? Let's briefly describe it here. Each object will Initialize an attribute inside
Let's take a look at the following code:Copy codeThe Code is as follows: A very simple piece of code. Let's see what new has done? We can split the new process into the following three steps:The key lies in the second step. Let's prove it:Copy codeThe Code is as follows: This code returns true. It indicates that step 2 is correct.So what is _ proto? Let's briefly describe it here. Each object will Initialize an attribute inside it, namely _
JS in the inheritance, is the object-oriented knowledge, because JS does not have the concept of class, so the inheritance is achieved through the object, when it comes to inheritance, we must speak of prototype, we have to say the new process.A small piece of the following:script type="text/javascript"> var Person = function () { }; var p = new Person(); script>Let's see what this new has done. We can split the new process into the following three steps:Proto=person.prototype;T
execution of the sentence ends. When executing dog instanceoof Animal, perform the following steps to the third part to determine the built-in attributes of dog and Animal. prototype is not an object. Next, execute step 4. if the built-in attributes of the dog object are not the same as those of the Animal class, the built-in attributes of the object pointed to by the dog built-in attributes are retrieved. determine whether the built-in attributes of the object to which the dog property points
net/rpc/protorpc/service.pb 2.123s
Test pass, continue.
Compiling the Proto file
Create a pbrpc subdirectory that is named working directory and then create pbrpc/arith.pb .net/rpc/protorpc/service.pb/service.proto pbrpc/arith.pb the subdirectory to which the files are copied.
The package name is changed arith to, arith.proto the contents of the file are as follows:
package arith;option cc_generic_services = true;option java_gener
is to use ConsuleInstallation Reference: Consul installation doc
Installing PROTOBUF
go get github.com/micro/protobuf/{proto,protoc-gen-go}
Install Go-micro, refer to GitHub Go-micro
go get github.com/micro/go-micro
Install micro, refer to GitHub Micro
go get github.com/micro/micro
Next we'll simply use micro to build a Hello World app.
To create a proto file,
This is a creation in
Article, where the information may have evolved or changed.
GRPC HTTP protocol Conversion
Just when there is a need, we see this implementation posture. A blog from CoreOS, reprinted to the GRPC official blog Grpc with REST and Open APIs.
ETCD3 switch to GRPC to be compatible with the original API, but also to provide Http/json way of the API, in order to meet this need, either develop two sets of APIs, or implement a conversion mechanism, they chose the latter, and we choo
functions are created in JavaScript.When the code is executed to function Staff (name) {this. name = name;} is equivalent to executing var Staff = new Function ("name", "this. name = name ") the interpreter uses the predefined Function () constructor to create a function-type object, namely, Staff.Then add the _ proto _ attribute to the created stff object and assign the value to the prototype of the Function constructor. This step is a step in the c
','console.log(str)'); var o3 = new f1(); var o1 = {}; var o2 =new Object(); console.log(typeof Object); //function console.log(typeof Function); //function console.log(typeof o1); //object console.log(typeof o2); //object console.log(typeof o3); //object console.log(typeof f1); //function console.log(typeof f2); //function console.log(typeof f3); //function
In the preceding example, o1 o2 o3 is a common object, and f1 f2 f3 is a function object. How to differentiate, in fact, is very simple,Al
prototype of the parent object, which is how the two-object-declared instance will be affected. Therefore, this method is not recommended.
Prototype chain
People who have written inheritance know that inheritance can be inherited from multiple layers. And in JS, this constitutes the prototype chain. The prototype chain has been mentioned several times, so what is the prototype chain? An instance should at least have the Proto attribute that points
This is a creation in
Article, where the information may have evolved or changed.
GRPC HTTP protocol Conversion
Just when there is a need, we see this implementation posture. A blog from CoreOS, reprinted to the GRPC official blog Grpc with REST and Open APIs.
ETCD3 switch to GRPC to be compatible with the original API, but also to provide Http/json way of the API, in order to meet this need, either develop two sets of APIs, or implement a conversion mechanism, they chose the latter, and we c
principle and prototype chain implementation.
To understand the prototype mechanism, you must understand how functions are created in JavaScript.
When the code is executed to function Staff (name) {this. name = name;} is equivalent to executing var Staff = new Function ("name", "this. name = name ") the interpreter uses the predefined Function () constructor to create a function-type object, namely, Staff.
Then add the _ proto _ attribute to the cre
"_(Byref psrc as any) As long 'by Borland.Declare function mstrlower lib "utils. dll "_(Byref psrc as any) As long 'by Borland.'MemoryDeclare function mmemcopy lib "utils. dll "_(Byref pdst as any ,_Byref psrc as any ,_Byval nlength as long) as longDeclare function mmemfill lib "utils. dll "_(Byref pdst as any ,_Byval cfill as long ,_Byval nlength as long) as longDeclare function mmemzero lib "utils. dll "_(Byref pdst as any ,_Byval ucount as long) as long; /////////////////////////////////////
replicated in the code above, but the SetName method can be copied. Most fatally, any modification to the prototype of a child object affects the prototype of the parent object, which means that the instances declared by the two objects are affected.Therefore, this method is not recommended. The prototype chain is known to all who inherit, and inheritance can inherit multiple layers. In JS, this constitutes the prototype chain. The prototype chain is also mentioned many times earlier, so what i
JS in the inheritance, is object-oriented knowledge, because JS has no class concept. So inheritance is implemented through objects. Spoke of inheritance. We have to talk about prototype, we have to say the new process first.A small piece of the following:script type="text/javascript"> var Person = function () { }; var p = new Person(); script>Let's see what this new has done. We can split the new process into the following three steps:Proto=person.prototype;The key is the secon
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