Tag：Difference
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Time：2021-5-11
understand The angularjs expression is written in double braces: {{expression}}, and the data will be “output” at the position where the expression is written. It is the same as ng bind instruction, but differs in that:Double braces flash by when the page is refreshed, but ng bind doesn’t Similarities with JavaScript expressions It can contain […]
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Time：2021-5-5
For some MySQL specifications, there is a requirement in some company’s table creation specifications that all fields are not empty, which means that a default value is stored when there is no value. In fact, it should be absolute to say that all fields are not empty. It should be said that they are as […]
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Time：2021-5-2
We often write judgment codes like this //Judge whether there are variables $a = isset($b) ? $b : $c; //Determine whether the variable is empty $a = !empty($b) ? $b : $c; Php7 has a new grammar sugar to simplify (< font color = Red > PHP version must be greater than 7 < / […]
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Time：2021-5-1
Many new installation friends may have encountered that after installing win7 system on Intel’s sixth generation skylake installation platform, the USB mouse and keyboard can’t be used easily. The main reason for this phenomenon is the problem of EHCI and xhci drivers. Therefore, what I want to talk about today is the difference between EHCI […]
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Time：2021-4-27
Problem Description: Given an integer array nums and a target value target, please find the two integers in the array whose target value is sum and return their array subscripts.You can assume that each input corresponds to only one answer. However, you cannot reuse the same elements in this array. Example: Given nums = [2, […]
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Time：2021-4-26
gitLocal warehouses can be associated with multiple remote warehouses. If you want to know how to configure it, please refer to git how to use multiple managed platforms to manage code. Whengit remoteWhen multiple remote warehouses are associated, there are always some problems. Today, we encountered two remote warehouses that are inconsistent and cannot be […]
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Time：2021-4-23
*const Tand*mut TWhat’s the difference? Why is unique implemented using*const TInstead of using*mut T？ answer: (1) The difference after dereference,*const TPointer dereference correspondence & T,*mut TDereference correspondence & mut T; (2) In secure code, you can*const TConvert to*mut TBefore dereferencing, it is the original bare pointer, which can be converted between the original bare pointers; […]
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Time：2021-4-22
What’s the diffrence between link and @import ? the link belongs to the tags of xhtml, but @import is provided by css the link will loading when the web page is loaded, but css that referenced by @import will wait until the web page is loaded. the @import just can be recognized in ie5 and […]
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Time：2021-4-22
preface ========= Recently, spring recruitment has been in a tense interview, and now it has won the headline offer, so it’s not so nervous. I decided to share the interview questions with you. Welcome to discuss. Now let’s share the following questions. Meituan side I can’t remember 23333 Mainly ask some technical points of the […]
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Time：2021-4-21
In SQL server, count (*) or count (1) or count ([column]) is probably the most commonly used aggregate function. In fact, many people can’t distinguish the three. This article will elaborate the function, relationship and the underlying principle of the three. Usually, I often see some so-called optimization suggestions that use count (1) instead of […]
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Time：2021-4-20
Recently, I saw some code and found that it would be written like thisVector3.Lerp(x, y, Time.deltaTime), delta time is the time from the last call, it is not [ zero , one ] So what does this interpolation mean? In fact, this is a linear interpolation of deceleration. Let me give a very simple example. […]
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Time：2021-4-20
Microsoft Visual Studio (VS) is a series of development kit products of Microsoft Corporation. Vs is a basically complete development tool set, which includes most of the tools needed in the whole software life cycle, such as UML tools, code control tools, integrated development environment (IDE) and so on. The object code is applicable to […]
