sql–function, predicate, CASE expression function arithmetic function String functions String functions date related functions conversion function cast function – conversion of data types coalesce function – convert NULL values to other values predicate like – Partially consistent query for strings detween – range query `IS NULL` and `IS NOT NULL` IN (value 1, value 2, […]
Tag: predicate
[Java 8] Predicate, Consumer, Supplier, Function
[Java 8] Predicate, Consumer, Supplier, Function 1. Predicate Predicate is a functional interface in Java that represents a function that takes an input parameter and returns a Boolean value. It is usually used for conditional judgment, screening and filtering operations on elements in collections or streams. The Predicate interface defines an abstract method: boolean test(T […]
Typescript: type assertion and type predicate for type protection
In the process of using ts, novices are most afraid of ts alarms, many of which are caused by type protection. This article sorts out several solutions about type protection, welcome to read. Type protection Let’s first understand what type protection is through an example. interface Bird {<!– –> fly: boolean sing: () => {<!– […]
PostgreSQL database partition pruning – predicate_refuted_by_recurse
bool relation_excluded_by_constraints(PlannerInfo *root, RelOptInfo *rel, RangeTblEntry *rte) predicate_refuted_by(safe_restrictions, safe_restrictions, true) // The predicates on the table refute each other predicate_refuted_by(safe_constraints, rel->baserestrictinfo, false) // CHECK constraint and predicate refute on the table bool predicate_refuted_by(List *predicate_list, List *clause_list, bool weak){<!– –> Node *p, *c; if (predicate_list == NIL) return false; /* no predicate: no refutation is possible […]
java -Function, Predicate, Supplier, Consumer and custom implementation
Directory 1. Function 1.1 Code example 1.2 source code 2. Predicate 2.1 Code example 2.2 Source code 3. Supplier 3.1 Code example 3.2 Source code 4. Consumer 4.1 Code example 4.2 Source code 5. Custom Functional Programming 5.1 Declare the interface 5.2 Use interface After jdk1.8, java provides functional programming, that is, an abstract programming […]
Exploring the Predicates of the Java Functional Interface Package
This article will introduce five Predicate interface methods: test(), or(), and(), negate() and isEqual(). WeChat search and follow “Java Learning and Research Base Camp”, join the reader group, and share more exciting Java 8 brings with it the java.util.function package, which contains defined functional interfaces commonly used with Lambda expressions. To read this article, you […]
[GPGPU programming] Predicate register of GPGPU architecture analysis
Article directory concept effect architecture design how to use? how conditional execution Do different things for odd and even threads conditional assignment Perform different operations on arrays Classification Precautions (when programming) We know that the CPU can control the conditional execution of the program, and GPGPU also supports the conditional execution of the thread, but […]
Artificial Intelligence–Resolution Principle Based on Predicate Logic
Experiment 2 Principle experiment 1. Purpose of the experiment Deepen students’ understanding of the theorem proving process of the resolution principle, master the important links such as the clause transformation process, the replacement and unification algorithm, and the resolution strategy in the predicate logic-based resolution process, and further understand the steps to realize automatic theorem […]
4 functional interfaces you need to know in Java 8 – Function, Consumer, Supplier, Predicate
Foreword Many functional interfaces are available in Java 8, including Function, Consumer, Supplier, Predicate, and more. These 4 interfaces are what will be shared in this article, and they are all located under the java.util.function package. Why do you need to know these functional interfaces? Because these four functional interfaces are important new interfaces in […]
lambda (optional, predicate, etc.) of jdk1.8
lambda: Examples of Lambdas and Functional Interfaces Use case Lambda example corresponding functional interface Boolean expression (List list) -> list.isEmpty() Predicate Create an object ()->new Apple(10) Supplier Consume an object (Apple a) -> System.out.println(a.getWeight()) Consumer Select/extract from an object (String s) -> s.length() Function or ToIntFunction Merge two Value (int a, int b) -> a*b […]