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What does the @ symbol before a variable name mean in C#? [duplicate]
...e a string literal to change how the compiler parses the string. But what does it mean when a variable name is prefixed with the @ symbol?
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How to implement WiX installer upgrade?
... My previous comment is wrong - ignore it. What I described does not complain when installing, it doesn't upgrade like I thought. Put an asterisk in "Product Id". Put an actual GUID in "Product UpgradeCode" - and NEVER change this. Put an asterisk in "Package Id". Finally, when yo...
Object reference not set to an instance of an object.Why doesn't .NET show which object is `null`?
... a NullReferenceException in the second line and you want to know why .NET doesn't tell you that it was s that was null when the exception was thrown.
To understand why you don't get that piece of information you should remember that it is not C# source that executes but rather IL:
IL_0001: ldnu...
How does the Windows Command Interpreter (CMD.EXE) parse scripts?
...gle %
Expansion of arguments (%*, %1, %2, etc.)
Expansion of %var%, if var does not exist replace it with nothing
Line is truncated at first <LF> not within %var% expansion
For a complete explanation read the first half of this from dbenham Same thread: Percent Phase
Phase 2) Process special...
Does adding a duplicate value to a HashSet/HashMap replace the previous value
...to be insert it as a key in the HashMap lying underneath. However, HashMap does not support duplicates. Hence, HashSet will still result in having only one value of that type. As a side note, for every duplicate key, since the value generated for our entry in HashSet is some random/dummy value, the ...
Where does Chrome store extensions?
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Storage Location for Unpacked Extensions
Extension engine does not explicitly change their location or add a reference to its local paths, they are left in the place where there are selected from in all Operating Systems.
Ex: If i load a unpacked Extension from E:\Chrome Extension ...
Why does HTML5 form-validation allow emails without a dot?
...strate some HTML5 form-validation. However, I noticed the email validation doesn't check for a dot in the address, nor does it check for characters following said dot.
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How can I use a carriage return in a HTML tooltip?
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This answer outdated, Firefox does display newlines in titles now (I'm using v25). It works with \n, \u000A and \x0A.
– Halcyon
Aug 12 '14 at 11:47
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source command not found in sh shell
...ash for sh, it supports source. On Ubuntu, though, /bin/dash is used which does not support source. Most shells use . instead of source. If you cannot edit the script, try to change the shell which runs it.
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setResult does not work when BACK button pressed
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This does not work for me since my data is update in "onPause"
– Bostone
Jul 22 '12 at 17:49
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