HTTP StatusInformative | 100 | Continue | 101 | Switching Protocol | Success | 200 | OK | 201 | Created (POST) | 202 | Accepted | 203 | Non-Authoritative Information | 204 | No Content | Redirect | 301 | Move Permanently | Client Error | 400 | Bad Request | 401 | Unaithorized | 402 | Payment Required | 403 | Forbidden | 404 | Not Found | 408 | Timeout | 429 | Too Many Requests | 451 | Illegal | Server Error | 500 | Internal Server Error | 502 | Bad Gateway | 503 | Service Unavailable |
PythonList | lst | [10, 20, 30, 40, 50] | lst[:-1] | [10, 20, 30, 40] | lst[1:-1] | [20, 30, 40] | lst[::2] | [10, 30, 50] | lst[::-1] | [50, 40, 30, 20, 10] | | | and, or, not, True False | | | Import | from mod import mod1, mod2 | mod1() | import mod | mod.mod1() | | | Operators | + - / // % * | a | Operations | .len() | .sorted(list) | list.sort() | .reversed(list) | list.reverse() | | | Lists Operations | .append() | [ , , []] | .extend() | [ , , , ] | .insert(index, value) | .remove() | | | Dictionaries Operations | {key: value} | d[key] | value | .update() | .values() | .keys() | a | Strings | .count() | .index() | .upper() | .capitalize() | .split("_") | .strip(" ") | Remove todos os caracteres |
| | MySQLSELECT column1, column2 FROM table_name WHERE x = "ads" ORDER BY column1 DESC | SELECT COUNT(column_name) FROM table_name WHERE condition; | SELECT AVG(column_name) FROM table_name WHERE condition; | SELECT SUM(column_name) FROM table_name WHERE condition; | SELECT column1, ... FROM table_name WHERE columnN LIKE pattern; % - any, _something | | | INSERT INTO table name (column1, column2, column3, ...) VALUES (value1, value2, value3, ...) | UPDATE table_name SET column1 = value1, column2 = value2, ... WHERE condition | DELETE FROM table_name WHERE condition | CREATE TABLE table_name (column1 datatype, column2 datatype, ...) | | | DROP TABLE table_name | DROP DATABASE databasename | ALTER TABLE table_name ADD column_name datatype; | ALTER TABLE table_name DROP COLUMN column_name; | ALTER TABLE table_name MODIFY COLUMN column_name datatype; |
JavaArrays | .equals(Object[] arr1, Object[] arr2) | .sort(Object[] arr) | .toString() | | | String | .indexOf(char a) | .charAt(int index) | .equals(String s) | .format(String s, int 1, String 2, int 3, ...) | .length() | .subString(int beginIndex, int endIndex) | .toLowerCase() | .toUpperCase() | | | List<E> | .add(int index, E element) | .add (E element) | .contains(Object o) | .get(int index) | .indexOf(Object o) | .isEmpty() | .remove(int index) | .remove(Object o) | .set(int index, E Element) | .size() | .toArray() | .subList(int fromIndex, int toIndex) | | | HashMap<Object Key, Object Value> | .get(Object Key) | .put(Key key, Value value) | .remove(Object key) | .replace(K key, V value) | .size() | .values() | .containsKey(Object Key) | .containsValue(Object Value) | | | HashSet<E> | .add(E e) | .contains(Object o) | .remove(Object o) | .size() | .isEmpty() | .clear() | | | jUnits | void teste(){ ... } | assertEquals(exp, comp) |
| | GITCriar repo | git init | Aceder a staging area | git status | Adicionar ficheiro a Staging Area | git add {nome do ficheiro} | Remover da Staging Area | git reset HEAD -- <file> | Dar commit | git commit -m "Commit message" | Criar novo branch | git branch <new-branch-name> | Mudar de branch | git checkout {branch} | Merge Branch | git merge <branch-name> | Push para remoto | git push <remote> <branch> | Atualizar | git pull | Remover ficheiro do repositorio | git rm <file> |
MongooseSchema.create({ nome: name, password }) | Schema.findOne({ _id: id }) | Schema.find({ name: name }) | Schema.exists({ _id: id }) | Schema.updateMany({ {_id: id}, {name: name} }) | Schema.deleteOne({ _id: id }) |
SOLID PrinciplesSingle Responsibility | Class can have one responsibility | Open/Closed | Interfaces = - if's | Liskov Substitution | Subclass can do what Super does | Interface Segregation | Threedimensional shape x shape | Dependency Inversion |
ExpressJSconst express = require('express')(); | Get | app.get('/info', (req, res)=>{}) | Post | app.post('/:id', (req, res) => {)) | | | Send | res.status(200).send({}) | Redirect | res.redirect(301, '/') |
ReactJsrender(){return(<div>...</div>)} | Array => .map(() => { ... }) | onClick = {() => this.handleSomething()} | Counters: <Counter onDelete={}/> | Counter: this.props.onDelete | | | Class | state = {...json...} | this.setState({count: this.state.count + 1}) | | | componentDidMount | componentDidUpdate | componentWillUnmount |
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