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Why is it Valid to Concatenate Null Strings but not to Call “null.ToString()”?
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The reason for first one working:
From MSDN:
In string concatenation operations,the C# compiler treats a null string the same as an empty string, but it does not convert the value of the original null string.
More information on the + binary operator:
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Where do I use delegates? [closed]
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A delegate is a named type that defines a particular kind of method. Just as a class definition lays out all the members for the given kind of object it defines, the delegate lays out the method signature for the kind of method it defines.
Based on this stat...
Django get the static files URL in view
I'm using reportlab pdfgen to create a PDF. In the PDF there is an image created by drawImage . For this I either need the URL to an image or the path to an image in the view. I managed to build the URL but how would I get the local path to the image?
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PHP编译安装时常见错误解决办法，php编译常见错误 - 更多技术 - 清泛网 - ...
.../coderwall.com/p/ggmpfa
configure: error: xslt-config not found. Please reinstall the libxslt >= 1.1.0 distribution
代码如下:
yum -y install libxslt-devel
configure: error: Could not find net-snmp-config binary. Please check your net-snmp installation.
代码如下:
yum -y install net-sn...
Property getters and setters
With this simple class I am getting the compiler warning
11 Answers
11
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Check if one list contains element from the other
I have two lists with different objects in them.
12 Answers
12
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How do you create a Distinct query in HQL
Is there a way to create a Distinct query in HQL. Either by using the "distinct" keyword or some other method. I am not sure if distinct is a valid keywork for HQL, but I am looking for the HQL equivalent of the SQL keyword "distinct".
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Set database timeout in Entity Framework
My command keeps timing out, so I need to change the default command timeout value.
9 Answers
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Regex - Should hyphens be escaped? [duplicate]
Hyphen is a special character in regex, for instance, to select a range, I could do something like:
3 Answers
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Why doesn't nodelist have forEach?
I was working on a short script to change <abbr> elements' inner text, but found that nodelist does not have a forEach method. I know that nodelist doesn't inherit from Array , but doesn't it seem like forEach would be a useful method to have? Is there a particular implementation i...