mruv

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

mruv

default_platform(:android)

platform :android do

  desc "Clean and Build a Signed APK"
  lane :clean_build do
    gradle(
      task: "clean assembleRelease",
      print_command: false,
      properties: {

mruv

const { Api, JsonRpc, RpcError } = require('eosjs');
const { JsSignatureProvider } = require('eosjs/dist/eosjs-jssig');
const fetch = require('node-fetch');
const { TextDecoder, TextEncoder } = require('text-encoding');

const signatureProvider = new JsSignatureProvider(["5JUVf4PgAppQciKbxngmmfWHsmaxGcfKu53X6zpKTK2zg25MsEn"]);
const rpc = new JsonRpc('http://node.dealin.io:1888', { fetch });
const api = new Api({
	rpc,
	signatureProvider,

mruv

const { JsonRpc } = require('eosjs');
const fetch = require('node-fetch');

const rpc = new JsonRpc('http://node.dealin.io:1888', { fetch });


// rewards - By customer
(async () => {
	const res = await rpc.get_table_rows({
		json: true,

mruv

void swap_without_temp(int *x, int *y) {
  *x = *x + *y;
  *y = *x - *y;
  *x = *x - *y;
}

mruv

import tensorflow as tf
import pandas as pd
from sklearn.model_selection import StratifiedKFold


def tf_cross_val_score(X, y, x_col_nms, n_classes):
    """
    Takes features, number of classes, labels and feature vector names and returns 3 validation scores.
    
    *X* Numpy ndarray - features

mruv

@Configuration
public class RestTemplateSslConfig {

    @Bean("httpsRestTemplate")
    @Scope("singleton")
    public RestTemplate httpsRestTemplate()
            throws NoSuchAlgorithmException, KeyStoreException, KeyManagementException {

        TrustStrategy acceptingTrustStrategy = (X509Certificate[] chain, String authType) -> true;
        SSLContext sslContext = org.apache.http.ssl.SSLContexts.custom()

mruv

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import static java.time.format.DateTimeFormatter.ofPattern;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;

mruv

# data source
spring.datasource.url=jdbc:mysql://localhost:3306/DATABASE_NAME?zeroDateTimeBehavior=convertToNull&useSSL=false
spring.datasource.username=DATABASE_USER
spring.datasource.password=DATABASE_PWD

# ddl && hibernate
spring.jpa.hibernate.ddl-auto=update
spring.jpa.show-sql=true
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5InnoDBDialect
spring.jpa.properties.hibernate.connection.driver_class=com.mysql.jdbc.Driver

mruv

//prints all prime numbers from 1 to 100

class PrimeNumbers{
     public static void main(String[] args){
           
           for(int i = 1; i < 100; ++i){//no. to test
               boolean isPrime = true;
               for(int j = 1; j < 100; ++j){
                  if(j != 1 && j != i){//don't divide by one or itself