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How do cache lines work?
...s not an easy task. If at the end of the day all you want is a performance test, you can use a tool like Cachegrind. However, as this is a simulation, its result may differ at some degree.
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What is RSS and VSZ in Linux memory management
...1786 (chromium-browse), now anon-rss:0kB, file-rss:0kB, shmem-rss:8044kB
Tested in Ubuntu 19.04, Linux kernel 5.0.0.
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Scala type programming resources
...type-level: implicitly[A =:= B]
value-level: Happens in the JVM via a unit test at runtime (i.e. no runtime errors):
in essense is an assert: assert(a == b)
type-level: Happens in the compiler via a typecheck (i.e. no compiler errors):
in essence is a type comparison: e.g. implicitly[A =:= B]...
Are arrays in PHP copied as value or as reference to new variables, and when passed to functions?
...found Kosta Kontos's answer seems to be more accurate. I do a simple quick test to confirm his finding gist.github.com/anonymous/aaf845ae354578b74906 Can you comment on his finding too?
– Cheok Yan Cheng
May 29 '14 at 10:38
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Multiprocessing - Pipe vs Queue
... as possible. These are the timing results of a drag race between similar tests using Pipe() and Queue()... This is on a ThinkpadT61 running Ubuntu 11.10, and Python 2.7.2.
FYI, I threw in results for JoinableQueue() as a bonus; JoinableQueue() accounts for tasks when queue.task_done() is called (...
Which is more preferable to use: lambda functions or nested functions ('def')?
... see that the lambda and defined versions are roughly equivalent. The last test took more time because python probably needed to allocate space every time it defined that lambda function.
– hlin117
Nov 21 '14 at 6:19
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What GRANT USAGE ON SCHEMA exactly do?
... the schema that contains it then you can't access the table.
The rights tests are done in order:
Do you have `USAGE` on the schema?
No: Reject access.
Yes: Do you also have the appropriate rights on the table?
No: Reject access.
Yes: Check column privileges.
Your...
How to read a large file - line by line?
...t parallel programming is like. I gave away for free the harder parts: the tested and working parallel code, for your learning benefit.
Thanks to: The open-source H2O project, by Arno and Cliff and the H2O staff for their great software and instructional videos, which have provided me the inspirat...
How do I adjust the anchor point of a CALayer, when Auto Layout is being used?
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By the way, here's a test rig I've been using. It would be great if someone figured this out: github.com/algal/AutolayoutAnchorPointTestRig
– algal
Nov 27 '12 at 12:16
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Ignoring time zones altogether in Rails and PostgreSQL
... query is displayed for the current time zone setting Vienna/Austria in my test, which has an offset +1 during winter and +2 during summer time ("daylight saving time", DST). So 2012-03-05 18:00:00+01 as DST only kicks in later.
Postgres has already forgotten how this value has been entered. All it ...