Classification of 23 design patterns
The Adapter Pattern serves as a bridge between two incompatible interfaces. This type of design pattern belongs to structural pattern, which combines the functions of two independent interfaces.
This pattern involves a single class that is responsib ...
Posted by wiley on Thu, 04 Jun 2020 20:00:48 -0700
Boot map is an essential part in the development of iOS. Many app s will have a customized open screen ad map after the boot map. Click the ad map to jump to the corresponding page of the ad map. Today, I'd like to share with you how to add this ad map and click the jump of ad map. This ad map is imp ...
Posted by gutogouveia on Thu, 04 Jun 2020 09:38:43 -0700
Recently, a batch of code has been maintained, including the use of a pile of if... With 8 or 9 layers of nesting in many cases, which is extremely painful. Therefore, search for some ways to reduce if...else to improve the code and write a simple summary.
if (measuredValue > 8)
return 5 * measuredVal ...
Posted by realtek on Thu, 04 Jun 2020 08:38:47 -0700
Push and pop sequence of stack
Print binary tree from top to bottom
Post order traversal sequence of binary search tree
Path with a certain value in a binary tree
Replication of complex linked list
Binary search tree and double linked list
Arrangement of strings
Push and pop sequ ...
Posted by Delaran on Thu, 04 Jun 2020 06:26:48 -0700
PL/SQL(Procedural Language/SQL) is a special application development language of Oracle database. It is a programming language formed after the process expansion of the standard SQL language.
PL/SQL Oracle extends SQL procedure.
PL/SQL database programming
Benefits: simple, efficient, flexible and practical
Posted by cheshil on Wed, 03 Jun 2020 03:08:17 -0700
1, Analysis function
RANK the same value RANK the same, RANK jump
DENSE_RANK the same value rank the same, rank consecutive
ROW_NUMBER returns a sequential ranking, regardless of whether the values are equal or not
The following figure is an example of three ranking methods
--The following three analysis functions can be used for ran ...
Posted by chopperwalker on Tue, 02 Jun 2020 08:32:46 -0700
Author: Zhi Guangda
When we are actually deploying a machine learning system, one of the most important things is the robustness of the system. We hope that the system will not only be effective for most cases, but also be truly reliable, such as being able to recognize attacks from others (deceiving your classification model).Therefore, the to ...
Posted by deadlyp99 on Tue, 02 Jun 2020 05:01:50 -0700
This article is from https://blog.csdn.net/UbuntuTouch/article/details/99546568 , with amendments and deletions.
In the previous article, we have described how to use the REST interface to create index es, documents, and actions in ES.In today's article, we'll show you how to use ES to search for our data.ES is a near real-time search.Let's c ...
Posted by evmace on Tue, 02 Jun 2020 03:08:05 -0700
1, Basic concepts
2, How to use
2.2 std::lock_guard class template
2.2.1 std::lock_ STD:: adopt of guard_ Lock parameter
2.3 std::unique_lock function template
2.3.1 unique_ The second parameter of lock
2.3.2 unique_ Member function of lock
Posted by jeffkee on Mon, 01 Jun 2020 04:00:45 -0700
Choose the appropriate flow operation mode
Be careful to execute immediately
Will LINQ to Objects degrade code performance
What has been learned
The cost of using LINQ to Objects
Performance and simplicity: can't fish and bear paw have both
LINQ's advantage is not to provide any new functions, but to enable us t ...
Posted by TreColl on Sun, 31 May 2020 21:06:09 -0700