I\'m using Struts2+JSP as my J2EE platforms. Sometimes I get null values from struts text fields of my jsp page into actions. for example in the login page, despite of validating my forms and preventi
I\'m writing C code for a system where address 0x0000 is valid and contains port I/O. Therefore, any possible bugs that access a NULL pointer will remain undetected and at the same time cause dangerou
I am creating a system to integrate with SAP. The client gave me the function and parameters, according to him, this function was usually performed in SAP but in my code when I try to retrieve the pa
I\'ve never used null before really, I tend to avoid using it and having it existing in my data.However I recently designed this table (s开发者_如何学Cimplified):
How come when i put //private String namespace = \"###Name:\"+name+\"###\"; and system.out.println(namespace) it comes out null?
I have some code that acquires a value for an enum: StringUtils.isEmpty(getEnumMember().value()); The supporting code looks like this:
I am using Doctrine 1.1 in Zend. I am trying to write开发者_JS百科 a query that will return records that have a null value in a certain column.
Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow.
Just doing a little introduction to JavaScript. I\'m used to more than often testing the existence of my pointers in C++ so as not to crash.
x is an Array. Notice the two comparisons below. The first should produce \"true\", as expected. The second throws an error. What is going on here?
加载中,请稍侯......