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what does populate in mongoose mean?

I came across the following line of code which I couldn't understand ,although there are lot of tutorials that ... The creator is Aaron" }) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what is the point of using pm2 and docker together?

We have been using pm2 quite successfully for running apps on our servers. We are currently moving to docker ... provide everything pm2 does? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what is the number that it shows when I print out the **this** pointer in java?

This program public class HelloWorld{ public void testFunc(){ System.out.println("Class = "+this); } public static ... in the second line mean? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what does && return in javascript expression

I was reading the javascipt code in some application and code was this getTotalFees:function(){ return this.grid ... or false rather than b See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what does const mean in c++ in different places

What is the difference between const string& getName() const {return name;} and string& getName() const {return ... beginning and at the end? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what is the best practice store images in android in SD card or in SQL lite DB?

I want to store sample images. what is the best efficient way weather to store on SD card or in DB? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what can I do to make display the bin folder on eclipse?

can anyone help me solve the issue that I have ? in fact when I create a project on eclipse, the bin folder ... my project. I need help please. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what characters are allowed in HTTP header values?

After studying HTTP/1.1 standard, specifically page 31 and related I came to conclusion that any 8-bit ... additional encoding, if possible). See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what does jQuery data() function do

I have not found what is the use of jquery function data(). Can anyone give me some example of how it can be used? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what is the use of HOST and NONE network in docker?

Trying to understand the docker networks, Docker creates the following networks automatically: # docker network ls ... possible with examples. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what is cross compilation?

what is cross compilation? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what is the difference between calling function in JavaScript with or without parentheses ()

so a simple example would be function a() { alert("something"); } anything.onclick = a; // this is without ... ("something"); return false; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what clearcase plugin to use with eclipse

Which Clearcase plugin should I use for eclipse 3.5+? which is easiest to use? which is most reliable? ... working with multiple views cleanly? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what is the use of Eval() in asp.net

What is the use of Eval() in ASP.NET? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what is the codec for mp4 videos in python OpenCV

fourcc = cv2.cv.CV_FOURCC(*'XVID') The above line is used for avi video. In the same fashion, which codec do we use for mp4 videos in Ubuntu? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what is the point of return in Ruby?

What is the difference between return and just putting a variable such as the following: no return def write_code( ... " end return mood end See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what is IEnumerable in .net

what is IEnumerable in .net? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what is difference between a Model and an Entity

I am confused to understand what is the meaning of this words: Entity, Model, DataModel, ViewModel Can any body ... them please? Thank you all. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what is the basic difference between stack and queue?

What is the basic difference between stack and queue?? Please help me i am unable to find the difference. How ... more detailed? Please help me. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what is the size of an enum type data in C++?

This is a C++ interview test question not homework. #include <iostream> using namespace std; enum months_t { january, ... but this is an enum. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what is Object Cloning in php?

Can someone explain me what is Object Cloning in php? When should i use clone keyword in php? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what is the proper way to convert between mysql datetime and python timestamp?

according to http://dev.mysql.com/doc/refman/5.0/en/datetime.html. i got to find a way to convert the string value ' ... '%Y-%m-%d %H:%M:%S')) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what are the rules for spaces in swift

I practicing in swift's playground and I couldn't figure out why swift is too specific about where programmer ... all swift rules about spaces. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what is the better way to handle errors in VB6

I have VB6 application , I want to put some good error handling finction in it which can tell me what was the ... the good way to do this See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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