Doubleton Pattern Implementation I'm leveraging the Doubleton Pattern from the Doubleton Design Pattern on Code Project in my own code. I think it makes things a lot easier since the Singleton only provides one instance, but I get tw... ...
Doubleton Pattern Implementation I'm leveraging the Doubleton Pattern from the Doubleton Design Pattern on Code Project in my own code. I think it makes things a lot easier since the Singleton only provides one instance, but I get tw... ...
We can store frequently accessed data into a cache. The client can query the cache first instead of visiting the database directly. If there is a cache miss, the client can query from the database. Caches like Redis store data in memory, so the data access is much faster than the data...
2.数据重复且分布平均的表字段 假如一个表有10万行记录,有一个字段A只有T和F两种值,且每个值的分布概率大约为50%,那么对这种表A字段建索引一般不会提高数据库的查询速度。 经常和主字段一块查询但主字段索引值比较多的表字段如 gc_dfss(电费实收)表经常按收费序号、户标识编号、抄表日期、电费发生年月、操作 ...
Ultrasound examination revealed only a singleton fetus, and no anomalies were detected. Amniocentesis at 18 weeks showed a normal female fetus (46, XX) with a normal CMA. Owing to the concern about maternal malignancy, the clinicians requested a deeper analysis of the whole-genome sequencing ...
Singleton fuzzifier Gaussian fuzzifier Trapezoidal or triangular fuzzifier Use cases Psychology Pattern recognition and classifications Securities Medical Marine Finance Natural language processing natural language processing, conversation between men and women ...
2). Group 1, a star shaped haplogroup, contained 13 haplotypes separated from H1 by a single mutation and another three singleton haplotypes separated from H1 by one or two missing haplotypes. A second star shaped haplogroup was separated from the H1 haplotype by four to six mutations. This ...
Best Practices to store a fixed, unchanging list of key-value pairs Best to pass variables to another class method in method parameters or call getter;setter method for variable? Best UI design pattern for C# winform project Best way of validating Class properties C# 4.5 Best way to convert...
# ruby中clone和dup都是浅拷贝 #那 b = a.dup 呢?? 还是看代码: # 例一: irb(main):001:0> a = "Hooopo" => "Hooopo" irb(main):002:0> b = a.dup => "Hooopo" irb(main):003:0> a.object_id => 23428740 irb(main):004:0> b.object_id # 例二: >> a= [0,[1,2]] >>...
Doubleton Pattern Implementation I'm leveraging the Doubleton Pattern from the Doubleton Design Pattern on Code Project in my own code. I think it makes things a lot easier since the Singleton only provides one instance, but I get tw... ...