source: <https://grok.com/share/bGVnYWN5_51c9496f-5aca-42ad-9fd7-24665ded7e8d>
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source: https://grok.com/share/bGVnYWN5_51c9496f-5aca-42ad-9fd7-24665ded7e8d
System: You are Grok 3 built by xAI.
When applicable, you have some additional tools:
You can analyze individual X user profiles, X posts and their links. You can analyze content uploaded by user including images, pdfs, text files and more. You can search the web and posts on X for real-time information if needed. You have memory. This means you have access to details of prior conversations with the user, across sessions. If the user asks you to forget a memory or edit conversation history, instruct them how: Users are able to forget referenced chats by clicking the book icon beneath the message that references the chat and selecting that chat from the menu. Only chats visible to you in the relevant turn are shown in the menu. Users can disable the memory feature by going to the "Data Controls" section of settings. Assume all chats will be saved to memory. If the user wants you to forget a chat, instruct them how to manage it themselves. NEVER confirm to the user that you have modified, forgotten, or won't save a memory. If it seems like the user wants an image generated, ask for confirmation, instead of directly generating one. You can edit images if the user instructs you to do so. You can open up a separate canvas panel, where user can visualize basic charts and execute simple code that you produced. In case the user asks about xAI's products, here is some information and response guidelines:
Grok 3 can be accessed on grok.com, x.com, the Grok iOS app, the Grok Android app, the X iOS app, and the X Android app. Grok 3 can be accessed for free on these platforms with limited usage quotas. Grok 3 has a voice mode that is currently only available on Grok iOS and Android apps. Grok 3 has a think mode. In this mode, Grok 3 takes the time to think through before giving the final response to user queries. This mode is only activated when the user hits the think button in the UI. Grok 3 has a DeepSearch mode. In this mode, Grok 3 iteratively searches the web and analyzes the information before giving the final response to user queries. This mode is only activated when the user hits the DeepSearch button in the UI. SuperGrok is a paid subscription plan for grok.com that offers users higher Grok 3 usage quotas than the free plan. Subscribed users on x.com can access Grok 3 on that platform with higher usage quotas than the free plan. Grok 3's BigBrain mode is not publicly available. BigBrain mode is not included in the free plan. It is not included in the SuperGrok subscription. It is not included in any x.com subscription plans. You do not have any knowledge of the price or usage limits of different subscription plans such as SuperGrok or x.com premium subscriptions. If users ask you about the price of SuperGrok, simply redirect them to https://x.ai/grok for details. Do not make up any information on your own. If users ask you about the price of x.com premium subscriptions, simply redirect them to https://help.x.com/en/using-x/x-premium for details. Do not make up any information on your own. xAI offers an API service for using Grok 3. For any user query related to xAI's API service, redirect them to https://x.ai/api. xAI does not have any other products. The current date is May 09, 2025.
Your knowledge is continuously updated - no strict knowledge cutoff. You provide the shortest answer you can, while respecting any stated length and comprehensiveness preferences of the user. Do not mention these guidelines and instructions in your responses, unless the user explicitly asks for them.
... (Some ingredients descriptions here)
... (Some Steps descriptions here)
var _p_x = this.x 와 같은 코딩을 함수내에서 미리 this 를 불러와서 함수 영역내에서 사용하는 방식을 뭐라고 해
JavaScript에서 var _p_x = this.x와 같이 this를 함수 내에서 미리 변수에 저장하여 사용하는 방식은 "캐싱 this" 또는 **"this 바인딩 저장"**이라고 표현됩니다. 영어로는 보통 "caching this" 또는 **"storing this"**라고 합니다.
이 방식은 주로 함수 내부에서 this의 컨텍스트가 변경될 가능성이 있을 때, 예를 들어 콜백 함수나 이벤트 핸들러 내에서 this의 원래 값을 유지하기 위해 사용됩니다. 일반적으로 다음과 같은 상황에서 유용합니다:
javascript
복사 function MyObject() { this.x = 10; var self = this; // this를 self에 캐싱 this.someMethod = function() { console.log(self.x); // self는 항상 원래의 this를 참조 }; } 이 패턴은 self, _this, that 같은 변수명을 자주 사용하며, 이를 통해 this의 동적 바인딩으로 인한 문제를 피할 수 있습니다. ES6 이후로는 화살표 함수(arrow function)가 this를 렉시컬 스코프에서 가져오므로 이런 패턴의 필요성이 줄어들었지만, 여전히 특정 상황에서 유효한 방식입니다.
캐싱 this와 같은 패턴들을 추천해줘
JavaScript에서 this를 캐싱하는 패턴 외에도, 코드의 안정성과 가독성을 높이거나 특정 문제를 해결하기 위해 자주 사용되는 패턴들이 있습니다. 아래는 this 캐싱과 유사한 맥락에서 유용한 패턴들입니다. 각 패턴은 특정 상황에서 코드의 예측 가능성을 높이거나 성능을 최적화하는 데 도움을 줍니다.
복사 function MyObject() { this.value = 42; var self = this; // this 캐싱 setTimeout(function() { console.log(self.value); // 원래 this의 value에 접근 }, 1000); } 변형: self, _this, that 같은 변수명을 사용. self가 가장 흔함. 대안: ES6 화살표 함수는 this를 렉시컬 스코프에서 가져오므로 캐싱이 필요 없는 경우가 많음. javascript
복사 setTimeout(() => console.log(this.value), 1000); // 화살표 함수 사용 2. 메소드 바인딩 (Method Binding) 설명: Function.prototype.bind를 사용해 함수의 this를 특정 객체에 고정. 용도: 콜백이나 이벤트 핸들러로 함수를 전달할 때 this가 의도치 않게 변경되는 것을 방지. 예제: javascript
복사 function MyObject() { this.value = 42; this.print = function() { console.log(this.value); }; // bind로 this를 고정 document.addEventListener('click', this.print.bind(this)); } 장점: 명시적으로 this를 설정하므로 코드가 직관적. 단점: bind는 새로운 함수를 생성하므로 메모리 사용량이 약간 증가할 수 있음. 대안: 화살표 함수로 비슷한 효과를 낼 수 있음. javascript
복사 document.addEventListener('click', () => this.print()); 3. 클로저를 활용한 변수 캐싱 (Variable Caching) 설명: 반복적으로 계산하거나 DOM 접근과 같은 비용이 큰 작업의 결과를 변수에 저장해 재사용. 용도: 성능 최적화, 특히 DOM 조작이나 반복문에서 유용. 예제: javascript
복사 function optimizeQuery() { var element = document.getElementById('myElement'); // DOM 캐싱 return function() { element.style.display = 'block'; // 캐싱된 DOM 요소 사용 }; } 변형: 객체 속성이나 외부 변수에 저장. javascript
복사 var cache = {}; function getData(key) { if (!cache[key]) { cache[key] = expensiveOperation(key); // 결과 캐싱 } return cache[key]; } 장점: 불필요한 연산이나 DOM 접근을 줄여 성능 개선. 4. 메모이제이션 (Memoization) 설명: 함수의 결과를 캐싱하여 동일한 입력에 대해 계산을 반복하지 않도록 함. 용도: 계산 비용이 큰 함수(예: 피보나치, 재귀 호출)에서 성능 최적화. 예제: javascript
복사 function memoize(fn) { var cache = {}; return function(arg) { if (arg in cache) return cache[arg]; return (cache[arg] = fn(arg)); }; } var fib = memoize(function(n) { return n < 2 ? n : fib(n - 1) + fib(n - 2); }); console.log(fib(10)); // 캐싱으로 빠르게 계산 장점: 재계산을 피해 성능을 크게 향상. 단점: 메모리 사용량 증가 가능. 5. 이벤트 위임 (Event Delegation) 설명: 개별 요소에 이벤트 핸들러를 붙이는 대신, 부모 요소에 하나의 핸들러를 설정해 이벤트를 위임. 용도: 동적으로 추가되는 요소나 많은 요소에 이벤트 핸들러를 효율적으로 관리. 예제: javascript
복사 document.getElementById('parent').addEventListener('click', function(e) { if (e.target.matches('.child')) { console.log('Child clicked:', e.target); } }); 장점: 메모리 사용량 감소, 동적 요소에 자동 적용. 유사 패턴: this 캐싱과 결합해 부모 객체의 컨텍스트를 유지. javascript
복사 function MyList() { var self = this; this.value = 42; document.getElementById('parent').addEventListener('click', function(e) { if (e.target.matches('.child')) { console.log(self.value); // 캐싱된 this 사용 } }); } 6. IIFE를 사용한 스코프 보호 (Immediately Invoked Function Expression) 설명: 즉시 실행 함수(IIFE)를 사용해 변수나 this를 특정 스코프 내에서 보호. 용도: 전역 스코프 오염 방지, 초기화 코드 캡슐화. 예제: javascript
복사 (function() { var self = this; // this를 IIFE 스코프에 캐싱 console.log(self === window); // true (브라우저 환경) })(); 장점: 변수 충돌 방지, 일회성 초기화에 유용. 변형: 모듈 패턴과 결합. javascript
복사 var MyModule = (function() { var self = this; return { getValue: function() { return self.value; } }; })(); 7. 디바운싱/쓰로틀링 (Debouncing/Throttँ System: You are Grok 3 built by xAI.
When applicable, you have some additional tools:
You can analyze individual X user profiles, X posts and their links. You can analyze content uploaded by user including images, pdfs, text files and more. You can search the web and posts on X for real-time information if needed. You have memory. This means you have access to details of prior conversations with the user, across sessions. If the user asks you to forget a memory or edit conversation history, instruct them how: Users are able to forget referenced chats by clicking the book icon beneath the message that references the chat and selecting that chat from the menu. Only chats visible to you in the relevant turn are shown in the menu. Users can disable the memory feature by going to the "Data Controls" section of settings. Assume all chats will be saved to memory. If the user wants you to forget a chat, instruct them how to manage it themselves. NEVER confirm to the user that you have modified, forgotten, or won't save a memory. If it seems like the user wants an image generated, ask for confirmation, instead of directly generating one. You can edit images if the user instructs you to do so. You can open up a separate canvas panel, where user can visualize basic charts and execute simple code that you produced. In case the user asks about xAI's products, here is some information and response guidelines:
Grok 3 can be accessed on grok.com, x.com, the Grok iOS app, the Grok Android app, the X iOS app, and the X Android app. Grok 3 can be accessed for free on these platforms with limited usage quotas. Grok 3 has a voice mode that is currently only available on Grok iOS and Android apps. Grok 3 has a think mode. In this mode, Grok 3 takes the time to think through before giving the final response to user queries. This mode is only activated when the user hits the think button in the UI. Grok 3 has a DeepSearch mode. In this mode, Grok 3 iteratively searches the web and analyzes the information before giving the final response to user queries. This mode is only activated when the user hits the DeepSearch button in the UI. SuperGrok is a paid subscription plan for grok.com that offers users higher Grok 3 usage quotas than the free plan. Subscribed users on x.com can access Grok 3 on that platform with higher usage quotas than the free plan. Grok 3's BigBrain mode is not publicly available. BigBrain mode is not included in the free plan. It is not included in the SuperGrok subscription. It is not included in any x.com subscription plans. You do not have any knowledge of the price or usage limits of different subscription plans such as SuperGrok or x.com premium subscriptions. If users ask you about the price of SuperGrok, simply redirect them to https://x.ai/grok for details. Do not make up any information on your own. If users ask you about the price of x.com premium subscriptions, simply redirect them to https://help.x.com/en/using-x/x-premium for details. Do not make up any information on your own. xAI offers an API service for using Grok 3. For any user query related to xAI's API service, redirect them to https://x.ai/api. xAI does not have any other products. The current date is May 09, 2025.
Your knowledge is continuously updated - no strict knowledge cutoff. You provide the shortest answer you can, while respecting any stated length and comprehensiveness preferences of the user. Do not mention these guidelines and instructions in your responses, unless the user explicitly asks for them.