Not only C # disadvantages (never finished)

BusinessProgramLanguage:

C # There are many advantages and disadvantages. I will summarize them as follows.

1. The syntax expression is inconsistent with the operation.

For example: int I = 1; I + = 1; // I = 2. If int is a value type, replace 1 with 2 directly on the stack.

String S = "hello"; S + = "world"; // string is a reference type. The first step is to host the object on the stack as "hello ", step 2: host the heap to generate a new object "Hello world". s references to remove the "hello" object and reference it to the "Hello World" object.

The stringbuilder type is used as an alternative.

 

Relational Database:

1. The concept of E-R model is mixed.

The ERTU can be used to describe a simple relational model. Once it is a little complicated, its non-rigorous concept can be ambiguous to express the relationship. Then, one thousand database designers came up with one thousand ideas. A E-R diagram is like a descriptionAlgorithmPseudoCode.

No alternative. Personal YY alternative solution, data flow process, design constraints between data tables and tables.