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How does Facebook Sharer select Images and other metadata when sharing my URL?
...jpg"/>
<meta property="og:image:secure_url" content="https://secure.example.com/ogp.jpg" />
and it should be present inside the <head></head> tag at the top of your page.
If these tags are not present, it will look for their older method of specifying an image: <link rel...
LINQ Group By into a Dictionary Object
...).ToDictionary(g => g.Key, g => g.ToList()) This could be a part of extension Linq library. so we only has to do .ToDictionary(o=>o.PropertyName)
– Jaider
Jan 27 '17 at 15:46
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int value under 10 convert to string two digit number
...r more options: http://msdn.microsoft.com/en-us/library/0c899ak8(VS.71).aspx
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function declaration isn't a prototype
... void consistently when you mean no arguments.
If you have a variable a, extern int a; is a way to tell the compiler that a is a symbol that might be present in a different translation unit (C compiler speak for source file), don't resolve it until link time. On the other hand, symbols which are fu...
How to permanently export a variable in Linux?
I am running RHEL6, and I have exported an environment variable like this:
6 Answers
6...
difference between Product Backlog Item and Feature in Team Foundation work item types
I have a question about Microsoft Team Foundation. In Visual Studio, Team Explorer, I can create a new work item. Work item types here are dictated by your team's chosen process template; I'm not sure which process template we're using. In any case, in Team Explorer, when I want to create a new work...
Parse string to date with moment.js
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What about existing date variables. var date = moment("2014-02-27T10:00:00").format('DD-MM-YYYY'); var dateCalendarPart = moment(date).format('YYYY/MM/DD'); alert(date); alert(dateCalendarPart); Gives an invalid date error?????
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How does a Linux/Unix Bash script know its own PID?
...r more information, including differences between the two.
TL;DRTFM
$$ Expands to the process ID of the shell.
In a () subshell, it expands to the process ID of the invoking shell, not the subshell.
$BASHPID Expands to the process ID of the current Bash process.
In a () subshell, it expands...
Change R default library path using .libPaths in Rprofile.site fails to work
... want to add a library why not append the new library (which must already exist in your filesystem) to the existing library path?
.libPaths( c( .libPaths(), "~/userLibrary") )
Or (and this will make the userLibrary the first place to put new packages):
.libPaths( c( "~/userLibrary" , .libPaths(...
How do I declare an array of weak references in Swift?
... with reaping array contents, you could do something along the lines of:
extension Array where Element:Weak<AnyObject> {
mutating func reap () {
self = self.filter { nil != $0.value }
}
}
The use of AnyObject above should be replaced with T - but I don't think the current Swift lang...