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How to list active / open connections in Oracle?
...from v$session b, v$process a
where
b.paddr = a.addr
and type='USER'
order by spid;
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Clang vs GCC - which produces faster binaries? [closed]
... rich in polymorphism and templates and but is still
mired in many patches by its not-so-distant past in hacked-together C.
Move semantics are not expressly exploited. It is single-threaded. I
have devoted no serious effort to optimizing it, while the "architecture"
remains so largely ToDo.
I emplo...
How in node to split string by newline ('\n')?
How in node to split string by newline ('\n') ?
I have simple string like var a = "test.js\nagain.js" and I need to get ["test.js", "again.js"] .
I tried
...
What does the git index contain EXACTLY?
...portant data structures in git.
It represents a virtual working tree state by recording list of paths and their object names and serves as a staging area to write out the next tree object to be committed.
The state is "virtual" in the sense that it does not necessarily have to, and often does not, m...
How to select only 1 row from oracle sql?
... @bdares: it will work, yes. But not your answer, with the order by.
– ypercubeᵀᴹ
Jan 19 '12 at 0:30
1
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What could cause java.lang.reflect.InvocationTargetException?
...
You've added an extra level of abstraction by calling the method with reflection. The reflection layer wraps any exception in an InvocationTargetException, which lets you tell the difference between an exception actually caused by a failure in the reflection call (may...
What does enctype='multipart/form-data' mean?
...m handling library
Most (such as Perl's CGI->param or the one exposed by PHP's $_POST superglobal) will take care of the differences for you. Don't bother trying to parse the raw input received by the server.
Sometimes you will find a library that can't handle both formats. Node.js's most pop...
How exactly does the callstack work?
...in EAX.
So far so good. Now the interesting thing happens:
The low-order byte of EAX, designated by the 8-bit register AL, is taken and stored in the byte right after the base pointer: That is -1(%rbp), the offset of the base pointer is -1. This byte is our variable c. The offset is negative becau...
Entity Framework 4 Single() vs First() vs FirstOrDefault()
...overview of the different methods:
Find() - when you want to get an item by primary key. This will return null if it can't find an item. It will look in the context before going to the database (as pointed out by Yaron in the comments) which can be an important efficiency factor if you need to get...
How to replace part of string by position?
... and return a new string. The StringBuilder approach avoid this extra cost by working within a pre-allocated section of memory and moving chars round within it.
– redcalx
Apr 17 '18 at 15:52
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