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How get integer value from a enum in Rails?
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edited Oct 7 '16 at 0:09
answered Nov 5 '14 at 11:32
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How to Remove ReadOnly Attribute on File Using PowerShell?
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You can use Set-ItemProperty:
Set-ItemProperty file.txt -name IsReadOnly -value $false
or shorter:
sp file.txt IsReadOnly $false
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Date vs DateTime
...n retrieve the date part via the Date property (which is another DateTime with the time set to 00:00:00).
And you can retrieve individual date properties via Day, Month and Year.
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Null coalescing in powershell
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Powershell 7+
Powershell 7 introduces native null coalescing, null conditional assignment, and ternary operators in Powershell.
Null Coalescing
$null ?? 100 # Result is 100
"Evaluated" ?? (Expensive-Operation "Not Evaluated") # Right side here is not evaluated
Null Conditional Assignm...
Get last element of Stream/List in a one-liner
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It is possible to get the last element with the method Stream::reduce. The following listing contains a minimal example for the general case:
Stream<T> stream = ...; // sequential or parallel stream
Optional<T> l...
How to use Global Variables in C#?
How do I declare a variable so that every class (*.cs) can access its content, without an instance reference?
4 Answers
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how to “reimport” module to python then code be changed after import
... Python 3.x
import importlib
import foo #import the module here, so that it can be reloaded.
importlib.reload(foo)
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Finding current executable's path without /proc/self/exe
It seems to me that Linux has it easy with /proc/self/exe. But I'd like to know if there is a convenient way to find the current application's directory in C/C++ with cross-platform interfaces. I've seen some projects mucking around with argv[0], but it doesn't seem entirely reliable.
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How to reference a .css file on a razor view?
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For CSS that are reused among the entire site I define them in the <head> section of the _Layout:
<head>
<link href="@Url.Content("~/Styles/main.css")" rel="stylesheet" type="text/css" />
@RenderSection("Styles", false)
</head>
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How can I recall the argument of the previous bash command?
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Also, if you want an arbitrary argument, you can use !!:1, !!:2, etc. (!!:0 is the previous command itself.) See gnu.org/software/bash/manual/bashref.html#History-Interaction
– janmoesen
Jul 30 '10 at 12:21
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