popcornylu

NSString* docPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
NSString* dbPath = [docPath stringByAppendingPathComponent:@"mydatabase.db"];
NSFileManager *fm = [NSFileManager defaultManager];

// Check if the database is existed.
if(![fm fileExistsAtPath:dbPath])
{
	// If database is not existed, copy from the database template in the bundle            
	NSString* dbTemplatePath = [[NSBundle mainBundle] pathForResource:@"mydatabase" ofType:@"db"];
	NSError* error = nil;    

popcornylu

#import <Foundation/Foundation.h>

@interface NSInvocation (PopcornyLu)
+ (NSInvocation*) invocationWithTarget:(id)target 
                              selector:(SEL)selector;

+ (NSInvocation*) invocationWithTarget:(id)target 
                              selector:(SEL)selector 
                             arguments:(id)firstArg, ... NS_REQUIRES_NIL_TERMINATION;
@end

popcornylu

#import "NSString+template.h"

@implementation NSString (template)

+(NSString*)stringWithTemplate:(NSString*)template 
                       fromMap:(NSDictionary*)map
{
    NSString* retStr = nil;    
    NSMutableString* buffer = [NSMutableString new];    
    NSScanner* scanner = [[NSScanner alloc] initWithString:template];    

popcornylu

#Referecne: 
# 1. https://gist.github.com/zenorocha/7159780
# 2. 


#install xcode command tool

xcode-select --install

# check

popcornylu

import java.util.function.Function;

public class Iterables {
    public static <F, T> Iterable<T> map(
            Iterable<F> iterable,
            Function<F, T> mapper)
    {
        return null;
    }
}

popcornylu

Questions

來考一下SQL知識

Q1

如果兩個Table，size分別是m跟n，m>0 請問inner join的話最多會產生多少record?

1. max(m, n)
2. min(m, n)
3. m + n

popcornylu

import java.util.LinkedList;
import java.util.Random;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.Executor;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.function.BiConsumer;
import java.util.function.Supplier;

public class ThrottlingInvoker{

popcornylu

#!/bin/bash
set -euo pipefail

if [[ $# -ne 2 ]]; then
  echo "Usage: kubectl-mvpvc <ns1/pvc1> <ns2/pvc2>"
  exit 1
fi

NS_PVC_FROM=$1
NS_PVC_TO=$2

popcornylu

The new added output is mark as +

$ piperider compare
...
 [  OK  ]   orders.customer_id                                not_null_orders_customer_id
 [  OK  ]   orders.gift_card_amount                           not_null_orders_gift_card_amount
 [  OK  ]   orders.order_id                                   not_null_orders_order_id
 [  OK  ]   orders.order_id                                   unique_orders_order_id