kotlin

问题 My problem is the user insert a name like "Jon Snow" and I don't know how to validate with a function if the names first char is upper case and if they are spare by a space fun checkName(nome:String):Boolean{ if (name[0].isUpperCase()){ var count=0 //if (nome) do { count++ }while (name[count]==' ') var charAfterSpace:Char=nome[count]+1 when(charAfterSpace.isUpperCase()){ false->return false //else->return true } } return false } 回答1: Split the string then check if all the elements match the

问题 I have this Entry data class @Entity(tableName = "entry") @Typeconverters(DateConverter::class) data class Entry( @PrimaryKey(autoGenerate = false) var id : String, var username : String, var type : String, var description : String, var category : String, var amount : Double, var date : String, var lastUpdate : String, var isDeleted : Boolean) } The date field contains a string that represents a date in the "yyyy-MM-dd" format, while the lastUpdate contains a string that represents a date in

问题 I have this Entry data class @Entity(tableName = "entry") @Typeconverters(DateConverter::class) data class Entry( @PrimaryKey(autoGenerate = false) var id : String, var username : String, var type : String, var description : String, var category : String, var amount : Double, var date : String, var lastUpdate : String, var isDeleted : Boolean) } The date field contains a string that represents a date in the "yyyy-MM-dd" format, while the lastUpdate contains a string that represents a date in

问题 this is my test class: @Testcontainers @ReactiveDataNeo4jTest internal class RepositoryIT { @Container private val container = KNeo4jContainer.instance @Test fun `should answer with One`() { val boltUrl = container.getBoltUrl() GraphDatabase.driver( boltUrl, AuthTokens.basic("neo4j", "123456")) .use { driver -> driver.session().use { session -> val res = session.run("OPTIONAL MATCH(n) RETURN 1 AS value") val one = res.single().get("value").asInt() assertThat(one).isEqualTo(2) } } } } object

问题 this is my test class: @Testcontainers @ReactiveDataNeo4jTest internal class RepositoryIT { @Container private val container = KNeo4jContainer.instance @Test fun `should answer with One`() { val boltUrl = container.getBoltUrl() GraphDatabase.driver( boltUrl, AuthTokens.basic("neo4j", "123456")) .use { driver -> driver.session().use { session -> val res = session.run("OPTIONAL MATCH(n) RETURN 1 AS value") val one = res.single().get("value").asInt() assertThat(one).isEqualTo(2) } } } } object

问题 this is my test class: @Testcontainers @ReactiveDataNeo4jTest internal class RepositoryIT { @Container private val container = KNeo4jContainer.instance @Test fun `should answer with One`() { val boltUrl = container.getBoltUrl() GraphDatabase.driver( boltUrl, AuthTokens.basic("neo4j", "123456")) .use { driver -> driver.session().use { session -> val res = session.run("OPTIONAL MATCH(n) RETURN 1 AS value") val one = res.single().get("value").asInt() assertThat(one).isEqualTo(2) } } } } object

问题 this is my test class: @Testcontainers @ReactiveDataNeo4jTest internal class RepositoryIT { @Container private val container = KNeo4jContainer.instance @Test fun `should answer with One`() { val boltUrl = container.getBoltUrl() GraphDatabase.driver( boltUrl, AuthTokens.basic("neo4j", "123456")) .use { driver -> driver.session().use { session -> val res = session.run("OPTIONAL MATCH(n) RETURN 1 AS value") val one = res.single().get("value").asInt() assertThat(one).isEqualTo(2) } } } } object

问题 We have a PreferenceFragmentCompat , and with a tap on a preference, we want to switch from the current PreferenceFragmentCompat to a new PreferenceFragmentCompat . (To have certain settings on a new screen). However, regardless of what we have tried, we keep running into the following error: Fragment declared target fragment that does not belong to this FragmentManager MainActivity.kt class MainActivity : AppCompatActivity(), ActivityCompat.OnRequestPermissionsResultCallback,

问题 We have a PreferenceFragmentCompat , and with a tap on a preference, we want to switch from the current PreferenceFragmentCompat to a new PreferenceFragmentCompat . (To have certain settings on a new screen). However, regardless of what we have tried, we keep running into the following error: Fragment declared target fragment that does not belong to this FragmentManager MainActivity.kt class MainActivity : AppCompatActivity(), ActivityCompat.OnRequestPermissionsResultCallback,

问题 I am using AndroidKeystore to generate RSA Keypair and doing encryption and decryption using this keypair My keypair generation code looks like this var keypairGen:KeyPairGenerator = KeyPairGenerator.getInstance(KeyProperties.KEY_ALGORITHM_RSA, "AndroidKeyStore") var keyPairGeneratorSpec: KeyGenParameterSpec = KeyGenParameterSpec .Builder(this.Key_Name, KeyProperties.PURPOSE_ENCRYPT or KeyProperties.PURPOSE_DECRYPT) .setDigests(KeyProperties.DIGEST_SHA256, KeyProperties.DIGEST_SHA512)