Base64, Basic authentication header value with Node.js
Buffer.from(’login:password’).toString(’base64’); // bG9naW46cGFzc3dvcmQ=Buffer.from(‘login:password’).toString(‘base64’); // bG9naW46cGFzc3dvcmQ=
*ngTemplateOutlet
<ng-template #toolbar> lorem ipsum… </ng-template> <!– put my template here –> <ng-container *ngTemplateOutlet="toolbar"></ng-container> <!– and here –> <ng-container *ngTemplateOutlet="toolbar"></ng-container> <!– and here, too 😉 –> <ng-container *ngTemplateOutlet="toolbar"></ng-container><ng-template #toolbar> lorem ipsum… </ng-template> <!– put my template here –> <ng-container *ngTemplateOutlet="toolbar"></ng-container> <!– and here –> <ng-container *ngTemplateOutlet="toolbar"></ng-container> <!– and here, too 😉 –> <ng-container Read more about *ngTemplateOutlet[…]
array to map with reduce()
let months = [ {month: 1, data1: "test1", data2: "test2"}, {month: 2, data1: "test1", data2: "test2"}, {month: 3, data1: "test1", data2: "test2"} ]; let monthsAsMap = months.reduce((map, obj) => { map[obj.month] = obj; return map; }, {}); console.log(monthsAsMap); console.log(monthsAsMap[’2’]);let months = [ {month: 1, data1: "test1", data2: "test2"}, {month: 2, data1: "test1", data2: Read more about array to map with reduce()[…]
@PreAuthorize with use Spring Expression Language (SpEL) and service method call
public interface EventRepository extends JpaRepository<Event, Long> { @PreAuthorize("@securityService.canSave(#event,principal)") Event save(@Param("event") Event event); @PreAuthorize("@securityService.canSave2(#event)") Event save2(@Param("event") Event event); } @Service("securityService") public class SecurityService { public boolean canSave(Event event, UserDetails principal) { // some logic here } public boolean canSave2(Event event) { // get principal from Security Context Object principal = Read more about @PreAuthorize with use Spring Expression Language (SpEL) and service method call[…]
Bash substring, prefix, suffix
Substring $ a=teststring $ echo ${a:2:5} ststr Remove prefix (#) $ a=text_test.txt $ echo ${a#*_} test.txt Remove suffix (%) $ a=text_test.txt $ echo ${a%.txt} text_test
AsyncPipe example
@Component({ … }) export class TestingComponent implements OnInit { units: any; constructor(private restService:RestService) { } ngOnInit() { this.units = this.restService.getUnits(); } }@Component({ … }) export class TestingComponent implements OnInit { units: any; constructor(private restService:RestService) { } ngOnInit() { this.units = this.restService.getUnits(); } } Template <ng-template #loading>Loading…</ng-template> <div *ngIf="units|async as units; else loading"> <span *ngFor="let unit Read more about AsyncPipe example[…]
JSON -> List
import org.springframework.core.io.Resource; import com.fasterxml.jackson.core.type.TypeReference; import com.fasterxml.jackson.databind.ObjectMapper; … @Value("classpath:/strings.json") private Resource jsonFile; @Autowired private ObjectMapper mapper; … List<String> listOfStrings = Arrays.asList( mapper.readValue(jsonFile.getInputStream(), String[].class) );import org.springframework.core.io.Resource; import com.fasterxml.jackson.core.type.TypeReference; import com.fasterxml.jackson.databind.ObjectMapper; … @Value("classpath:/strings.json") private Resource jsonFile; @Autowired private ObjectMapper mapper; … List<String> listOfStrings = Arrays.asList( mapper.readValue(jsonFile.getInputStream(), String[].class) );
SQL Server: test queries without cache
DBCC DROPCLEANBUFFERS; SELECT * FROM TABLE_X …DBCC DROPCLEANBUFFERS; SELECT * FROM TABLE_X … More info
Spring Boot: run WAR/JAR with specific profiles and/or port
Running from .war/.jar: java -Dspring.profiles.active=dev,other -Dserver.port=3000 -jar spring-app.warjava -Dspring.profiles.active=dev,other -Dserver.port=3000 -jar spring-app.war or java -Dspring-boot.run.profiles=dev,other -Dserver.port=3000 -jar spring-app.warjava -Dspring-boot.run.profiles=dev,other -Dserver.port=3000 -jar spring-app.war Running from Maven project (Spring Boot 2.x): mvn spring-boot:run -Dspring-boot.run.profiles=dev,other -Dspring-boot.run.arguments=–server.port=3000mvn spring-boot:run -Dspring-boot.run.profiles=dev,other -Dspring-boot.run.arguments=–server.port=3000 Spring Profiles
GIT: conflict resolve on pull or merge
Theirs on top git pull -s recursive -X theirs <remote> <branch> git merge -s recursive -X theirs <branch> My on top git pull -s recursive -X ours <remote> <branch> git merge -s recursive -X ours <branch>