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What is the purpose of a question mark after a type (for example: int? myVariable)?
Typically the main use of the question mark is for the conditional, x ? "yes" : "no" .
8 Answers
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In C#, how to check if a TCP port is available?
In C# to use a TcpClient or generally to connect to a socket how can I first check if a certain port is free on my machine?
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Why do we copy then move?
...rvalues, the above would not compile.
Won't a copy be expensive, especially given something like std::string?
If you pass an rvalue, that will be moved into str, and that will eventually be moved into data. No copying will be performed. If you pass an lvalue, on the other hand, that lvalue wil...
Restore a postgres backup file using the command line?
I'm new to postgresql, and locally, I use pgadmin3. On the remote server, however, I have no such luxury.
24 Answers
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Login failed for user 'DOMAIN\MACHINENAME$'
...System will authenticate themselves always as the correpsonding account locally (builtin\network service and builtin\system) but both will authenticate as the machine account remotely.
If you see a failure like Login failed for user 'DOMAIN\MACHINENAME$' it means that a process running as NETWORK S...
Concatenate a vector of strings/character
... Just a note that if sdata can contain either strings which are all of the same length or of variable lengths then paste(sdata, sep = '', collapse = '') should be used to avoid unexpected results.
– zelanix
Jan 19 '14 at 22:03
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Differences between hard real-time, soft real-time, and firm real-time?
...nics, etc.
Firm/soft real time systems can miss some deadlines, but eventually performance will degrade if too many are missed. A good example is the sound system in your computer. If you miss a few bits, no big deal, but miss too many and you're going to eventually degrade the system. Similar w...
How do I “decompile” Java class files? [closed]
What program can I use to decompile a class file? Will I actually get Java code, or is it just JVM assembly code?
19 Answer...
Why avoid increment (“++”) and decrement (“--”) operators in JavaScript?
...ly creating a temporary object. I find the postfix operator more aesthetically pleasing though.
– mc0e
Jan 11 '14 at 8:22
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Concatenating two std::vectors
... If you have concatenating several vectors to one, is it helpful to call reserve on the destination vector first?
– Faheem Mitha
Feb 4 '12 at 23:07
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