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What is “rvalue reference for *this”?
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If a class instance is not const, overload resolution will preferentially select the non-const version. If the instance is const, the user can only call the const version. And the this pointer is a const pointer, so the instance cannot be changed.
What "r-value reference for this` does is allow yo...
How to play a sound in C#, .NET
...plication just by Pressing the F5 to run the code.
7.Click the button and select an audio file. After the file loads, the sound will play.
I hope this is useful example to beginners...
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im...
Why do we need private subnet in VPC?
...including those with only private IP addresses, to directly access S3 from selected subnets within the VPC, without touching "the Internet," and without using a NAT instance or NAT gateway, but this does require additional configuration, and is only usable to access buckets within the same AWS regio...
How to determine programmatically whether a particular process is 32-bit or 64-bit
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The selected answer is incorrect as it doesn't do what was asked. It checks if a process is a x86 process running on x64 OS instead; so it will return "false" for a x64 process on x64 OS or x86 process running on x86 OS.
Also, it...
How do I add indices to MySQL tables?
...t I don't think it is used while I query my table. Do I have to change the select query when using an index ?
– Ced
Aug 12 '15 at 16:04
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sh...
Android java.lang.VerifyError?
...directory to the build class
path by (click right button on the
folder and select "Build path"->"Use
as source folder").
Rebuild your project.
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Running a cron every 30 seconds
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superb answer, should be the selected answer
– GuidedHacking
Feb 21 at 16:42
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Does HTTP use UDP?
...n't generate raw TCP frames (nor UDP ones for that matter) they do have to select the transport to use, and for normal HTTP that's always TCP. The newer QUIC pseudo-protocol does however use UDP.
– Alnitak
Sep 27 '18 at 9:16
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Get column index from column name in python pandas
...pecified label or are duplicates, the index with the larger index value is selected:
df = pd.DataFrame(
{"pear": [1, 2, 3], "apple": [2, 3, 4], "orange": [3, 4, 5]},
index=[0, .9, 1.1])
df.index.get_indexer([0, 1])
# array([ 0, -1], dtype=int64)
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Step out of current function with GDB
...ish command.
finish: Continue running until just after function in the selected stack frame returns. Print the returned value (if any). This command can be abbreviated as fin.
(see https://sourceware.org/gdb/current/onlinedocs/gdb/Continuing-and-Stepping.html#Continuing-and-Stepping)
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