predicate

问题 I am using spring boot with Query DSL. I have configured my spring boot to use snake case i.e. spring.jackson.property-naming-strategy=SNAKE_CASE . So my json payload input and output is in snake case like below { "first_name": "First", "last_name": "Last" } I am using @QuerydslPredicate for my search functionality. If I enter query params in snake case like below (http://localhost:8080/context/resource/?first_name=First) it is not parsed by Query DSL Predicate. However, If I provide the

问题 I am using spring boot with Query DSL. I have configured my spring boot to use snake case i.e. spring.jackson.property-naming-strategy=SNAKE_CASE . So my json payload input and output is in snake case like below { "first_name": "First", "last_name": "Last" } I am using @QuerydslPredicate for my search functionality. If I enter query params in snake case like below (http://localhost:8080/context/resource/?first_name=First) it is not parsed by Query DSL Predicate. However, If I provide the

问题 I am using spring boot with Query DSL. I have configured my spring boot to use snake case i.e. spring.jackson.property-naming-strategy=SNAKE_CASE . So my json payload input and output is in snake case like below { "first_name": "First", "last_name": "Last" } I am using @QuerydslPredicate for my search functionality. If I enter query params in snake case like below (http://localhost:8080/context/resource/?first_name=First) it is not parsed by Query DSL Predicate. However, If I provide the

问题 This question is directly related to first order logic creating terms for arithmetic expressions using prolog. After implementing the logic as per the link I have issues with the formatting of the ourput for printauth/1 . It currently results as 8-2+4* -3 , how is it possible to get something like ((8-2)+(4* -3)) (notice its not the same as +(-(8,2),*(4,-3))) . I have been trying to using various options (\k,\q) in format/2 predicate but nothing works. even I tried write_canonical and other

问题 I'm trying to create a function definition for the function all using foldr . p is the predicate. I know this can be done: all p = and . foldr (\x xs -> p x : xs) [] But what I want to do is to shift the function and into the foldr equation. Can this be done? I've tried the following, which all failed to work: all p = foldr (\x p -> \ys -> and (p x) ys) True all p = foldr (\x and -> (\ys -> (p x and ys))) True all p = foldr (\x ys -> and . (p x) ys) True Am I falling short in my understanding

问题 I am writing a code that counts how many words are in a string. How can I increase a register using je? For example: cmp a[bx+1],00h je inc cx 回答1: je is a conditional jump . Unlike ARM, x86 can't directly predicate another single instruction based on an arbitrary condition. There's no single machine instruction that can do anything like je inc cx or ARM-style inceq cx . Instead you need to build the logic yourself by conditionally branching over other instruction(s). If you want to increase

问题 I am writing a code that counts how many words are in a string. How can I increase a register using je? For example: cmp a[bx+1],00h je inc cx 回答1: je is a conditional jump . Unlike ARM, x86 can't directly predicate another single instruction based on an arbitrary condition. There's no single machine instruction that can do anything like je inc cx or ARM-style inceq cx . Instead you need to build the logic yourself by conditionally branching over other instruction(s). If you want to increase

问题 I have examined the following snippet: public static <T> Predicate<T> distinctByKey(Function<? super T, ?> keyExtractor) { Map<Object, Boolean> computed = new ConcurrentHashMap<>();/*IS THIS LINE CALLED ONCE ON STREAM->FILTER NOT MATTER HOW LONG THE STREAM IS*/ return t -> {return computed.putIfAbsent(keyExtractor.apply(t), Boolean.TRUE) == null;}; } private void test(){ final long d = Stream.of("JOHN","STEPHEN","ORTIZ","RONDON") .filter(distinctByKey(Function.identity())) .count(); System

问题 I have examined the following snippet: public static <T> Predicate<T> distinctByKey(Function<? super T, ?> keyExtractor) { Map<Object, Boolean> computed = new ConcurrentHashMap<>();/*IS THIS LINE CALLED ONCE ON STREAM->FILTER NOT MATTER HOW LONG THE STREAM IS*/ return t -> {return computed.putIfAbsent(keyExtractor.apply(t), Boolean.TRUE) == null;}; } private void test(){ final long d = Stream.of("JOHN","STEPHEN","ORTIZ","RONDON") .filter(distinctByKey(Function.identity())) .count(); System

问题 Say i have a db-table looking like this: CREATE TABLE myTable( id BIGINT, date TIMESTAMP, user_ids JSONB ); user_ids are a JSONB-ARRAY Let a record of this table look like this: { "id":13, "date":"2019-01-25 11:03:57", "user_ids":[25, 661, 88] }; I need to query all records where user_ids contain 25. In SQL i can achieve it with the following select-statement: SELECT * FROM myTable where user_ids::jsonb @> '[25]'::jsonb; Now i need to write a JPA-Predicate that renders "user_ids::jsonb @> '