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Use numpy array in shared memory for multiprocessing
..., each separately lockable, but with the number of arrays determined at runtime, is that a straightforward extension of what you've done here?
– Andrew
Jan 19 '13 at 4:30
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How to determine if a string is a number with C++?
... If there are utf8 characters in the string, you would get run time error.
– Lion King
Feb 23 '18 at 12:58
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What is the difference between Non-Repeatable Read and Phantom Read?
...e read: The A row that user A has queried has a different value the second time.
Phantom read: All the rows in the query have the same value before and after, but different rows are being selected (because B has deleted or inserted some). Example: select sum(x) from table; will return a different re...
How to load JAR files dynamically at Runtime?
...be immutable; you shouldn't be able to willy-nilly add classes to it at runtime. I'm actually very surprised that works with the system classloader. Here's how you do it making your own child classloader:
URLClassLoader child = new URLClassLoader(
new URL[] {myJar.toURI().toURL()},
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How to make a flat list out of list of lists?
...[item for sublist in l for item in sublist]
As evidence, you can use the timeit module in the standard library:
$ python -mtimeit -s'l=[[1,2,3],[4,5,6], [7], [8,9]]*99' '[item for sublist in l for item in sublist]'
10000 loops, best of 3: 143 usec per loop
$ python -mtimeit -s'l=[[1,2,3],[4,5,6],...
What does java.lang.Thread.interrupt() do?
...this situation. It does not automatically terminate the thread.
It is sometimes used in combination with a termination flag. When interrupted, the thread could check this flag, and then shut itself down. But again, this is just a convention.
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What's the difference between a proxy server and a reverse proxy server? [closed]
...ecting themselves.
Employees at a large company have been wasting too much time on facebook.com, so management wants access blocked during business hours.
A local elementary school disallows internet access to the playboy.com website.
A government is unable to control the publishing of news, so it c...
Check if an element is present in an array [duplicate]
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@PrithiviRaj It would be linear time, so performance impact would be directly proportional to the size of the array.
– Alister
Jan 23 '18 at 19:58
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Using openssl to get the certificate from a server
...-liner to extract the certificate from a remote server in PEM format, this time using sed:
openssl s_client -connect www.google.com:443 2>/dev/null </dev/null | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p'
s...
Please explain the exec() function and its family
... with a file block or an entire file.
Process resource utilisation and CPU time consumed is set to zero for the child.
The child also doesn’t inherit timers from the parent.
But what about the child memory? Is a new address space created for a child?
The answers in no. After the fork(), both pa...