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Why does multiprocessing use only a single core after I import numpy?
... has been that this doesn't seem to have any negative effect on numpy's performance, although this is probably machine- and task-specific .
Update:
There are also two ways to disable the CPU affinity-resetting behaviour of OpenBLAS itself. At run-time you can use the environment variable OPENBLAS_...
The differences between .build, .create, and .create! and when should they be used?
...fails). It's also just a wee bit shorter
I think .build is mostly an alias for .new. It works one way in Rails 3 and another way in Rails < 3.x
The most important part, however, is that these methods can be called through an association (has_many, etc.) to automatically link the two models.
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Cost of len() function
What is the cost of len() function for Python built-ins? (list/tuple/string/dictionary)
5 Answers
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How do I set $PATH such that `ssh user@host command` works?
...n't do anything
[ -z "$PS1" ] && return
You want to put anything for non-interactive shells before this line.
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Using reflect, how do you set the value of a struct field?
...way to learn about reflection is to see how the core Go developers use it. For example, the Go fmt and json packages. The package documentation has links to the source code files under the heading Package files.
The Go json package marshals and unmarshals JSON from and to Go structures.
Here's a...
Append TimeStamp to a File Name
...ng Method (String)
DateTime.Now.ToString("yyyyMMddHHmmssfff")
or string.Format
string.Format("{0:yyyy-MM-dd_HH-mm-ss-fff}", DateTime.Now);
or Interpolated Strings
$"{DateTime.Now:yyyy-MM-dd_HH-mm-ss-fff}"
There are following custom format specifiers y (year), M (month), d
(day), h (hour ...
How do you make lettered lists using markdown?
...
For those sticking to standard markdown, it may be helpful to add css rules like ol ol { list-style-type: lower-alpha; } and ol ol ol { list-style-type: lower-roman; } for different list styles at each level of nesting.
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range over interface{} which stores a slice
....Kind() {
case reflect.Slice:
s := reflect.ValueOf(t)
for i := 0; i < s.Len(); i++ {
fmt.Println(s.Index(i))
}
}
}
Go Playground Example: http://play.golang.org/p/gQhCTiwPAq
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Debug a java application without starting the JVM with debug arguments
...debug server to the process (available on Windows with the Debugging Tools for Windows). It is marked as experimental, so you may want to try it out on a test machine first.
Usage:
jsadebugd <pid>
jdb -connect sun.jvm.hotspot.jdi.SADebugServerAttachingConnector:debugServerName=localhost
Th...
Sharing src/test classes between modules in a multi-module maven project
I have a multi-module Maven project. For the sake of this example, consider two modules:
2 Answers
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