I am parsing a JSON file. After getting the NSDictionary, I parse the objects in the dictionary into an array of objects. However, for certain JSON files, I get NULL, which should be fine, but it cra
my question is, with some background: I have to generate some sql queries based on the table metadata (column format), and the result开发者_开发问答 is something like:
在日常使用数据库时，你在意过NULL值么？ 其实，NULL值在数据库中是一个很特殊且有趣的存在，下面我们一起来看看吧；
In PHP, ($m开发者_开发知识库yvariable==0) When $myvariable is zero, the value of the expression is true; when $myvariable is null, the value of this expression is also true. How can I exclude the seco
To split an array into two equal pieces I would do this, >> a = [1,2,3,4,5] => [1, 2, 3, 4, 5]
I\'m tracking down a NullRef开发者_开发百科erenceException and the official documentation is lacking.
Is there an analogous method to StringUtils.defaultString for collections, so you can avoid checking for null value, since in most cases, the desired effect is the same as if it were an empty list?
In a stored procedure (Oracle in my case), I want to add some values to an existing record. Problem is that both the existing value and the value to be added can be null. I only want the result to be
We have developed a custom visual studio workflow for SharePoint MOSS. It creates tasks for a document approval process and works fine on our development machines. We are using a main workflow activit
I have a problem with dereferencing a Javascript object and setting it to NULL. Here, I have a Folder implementation that supports recursive subdirectory removal.Please see my comments to understand
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