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Why should casting be avoided? [closed]
I generally avoid casting types as much as possible since I am under the impression that it's poor coding practice and may incur a performance penalty.
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Shorter syntax for casting from a List to a List?
I know its possible to cast a list of items from one type to another (given that your object has a public static explicit operator method to do the casting) one at a time as follows:
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TSQL - Cast string to integer or return default value
Is there a way in T-SQL to cast an nvarchar to int and return a default value or NULL if the conversion fails?
8 Answers
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When to use Cast() and Oftype() in Linq
I am aware of two methods of casting types to IEnumerable from an Arraylist in Linq and wondering in which cases to use them?
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best practice to generate random token for forgot password
...ier for forgot password . I read i can do it by using timestamp with mt_rand(), but some people are saying that time stamp might not be unique every time. So i am bit of confused here. Can i do it with using time stamp with this ?
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How do I check to see if a value is an integer in MySQL?
I see that within MySQL there are Cast() and Convert() functions to create integers from values, but is there any way to check to see if a value is an integer? Something like is_int() in PHP is what I am looking for.
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浅谈APM在电子交易系统中的应用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...统层，对于应用层一般无能为力，有的管理系统可以通过插件的形式监控到如apache tomcat aoracle等应用但彼此是孤立的，并不能把整个系统作为一个整体，为运维人员员提供详细的运维依据，只能靠运维人员的经验去分析判断故障...
Difference between is and as keyword
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is
The is operator checks if an object can be cast to a specific type.
Example:
if (someObject is StringBuilder) ...
as
The as operator attempts to cast an object to a specific type, and returns null if it fails.
Example:
StringBuilder b = someObject as StringBuil...
How to cast int to enum in C++?
How do I cast an int to an enum in C++?
5 Answers
5
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T-SQL Cast versus Convert
What is the general guidance on when you should use CAST versus CONVERT ? Is there any performance issues related to choosing one versus the other? Is one closer to ANSI-SQL?
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