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Fast permutation -> number -> permutation mapping algorithms
...you have n possibilities, so you can describe this with a number between 0 and n-1. For the position that the next element ends up at, you have n-1 remaining possibilities, so you can describe this with a number between 0 and n-2.
Et cetera until you have n numbers.
As an example for n = 5, consid...
How to have the cp command create any necessary folders for copying a file to a destination [duplica
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To expand upon Christian's answer, the only reliable way to do this would be to combine mkdir and cp:
mkdir -p /foo/bar && cp myfile "$_"
As an aside, when you only need to create a single directory in an existing hierar...
Limit file format when using ?
...I'd like to know if there is a solution. I'd like to keep solely to HTML and JavaScript; no Flash please.
11 Answers
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How to create index in Entity Framework 6.2 with code first
...d with .IsClustered().
EDIT #1
Added an example for multi column index and additional information how to mark an index as clustered.
EDIT #2
As additional information, in EF Core 2.1 it is exactly the same like in EF 6.2 now.
Here is the MS Doc artcile as reference.
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CURL alternative in Python
...r.add_password(None, 'https://app.streamsend.com/emails', 'login', 'key')
handler = urllib2.HTTPBasicAuthHandler(manager)
director = urllib2.OpenerDirector()
director.add_handler(handler)
req = urllib2.Request('https://app.streamsend.com/emails', headers = {'Accept' : 'application/xml'})
result =...
How can I convert tabs to spaces in every file of a directory?
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for visual space that are a mix of tabs and spaces, this approach give incorrect expansion.
– pizza
Jun 19 '12 at 7:32
7
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Difference between CLOCK_REALTIME and CLOCK_MONOTONIC?
Could you explain the difference between CLOCK_REALTIME and CLOCK_MONOTONIC clocks returned by clock_gettime() on Linux?
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MySQL ERROR 1045 (28000): Access denied for user 'bill'@'localhost' (using password: YES)
First let me mention that I've gone through many suggested questions and found no relevent answer. Here is what I'm doing.
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How to include another XHTML in XHTML using JSF 2.0 Facelets?
....xhtml. Do note that you don't need to repeat <html>, <h:head> and <h:body> inside the include file as that would otherwise result in invalid HTML.
You can use a dynamic EL expression in <ui:include src>. See also How to ajax-refresh dynamic include content by navigation menu...
What does -D_XOPEN_SOURCE do/mean?
...nclude definitions for some extra functions that are defined in the X/Open and POSIX standards.
This will give you some extra functionality that exists on most recent UNIX/BSD/Linux systems, but probably doesn't exist on other systems such as Windows.
The numbers refer to different versions of the...