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Linux error while loading shared libraries: cannot open shared object file: No such file or director
...ind that they are symlinks to each other, so if you have version 1.1 of libfoo.so, you'll have a real file libfoo.so.1.0, and symlinks foo.so and foo.so.1 pointing to the libfoo.so.1.0. And if you install version 1.1 without removing the other one, you'll have a libfoo.so.1.1, and libfoo.so.1 and l...
Ruby: How to turn a hash into HTTP parameters?
...example:
require 'rack'
Rack::Utils.build_query(
authorization_token: "foo",
access_level: "moderator",
previous: "index"
)
# => "authorization_token=foo&access_level=moderator&previous=index"
It even handles arrays:
Rack::Utils.build_query( {:a => "a", :b => ["c", "d", ...
How do I tell CPAN to install all dependencies?
...
From then on install modules by executing (as root if necessary)
cpanm Foo::Bar
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Using the RUN instruction in a Dockerfile with 'source' does not work
...ELL instruction:
...
RUN powershell -command Execute-MyCmdlet -param1 "c:\foo.txt"
...
The command invoked by docker will be:
cmd /S /C powershell -command Execute-MyCmdlet -param1 "c:\foo.txt"
This is inefficient for two reasons. First, there is an un-necessary
cmd.exe command proce...
Nested or Inner Class in PHP
...ce 2013 - as of 2016/12/29):
https://wiki.php.net/rfc/nested_classes
class foo {
public class bar {
}
}
At least, anonymous classes made it into PHP 7
https://wiki.php.net/rfc/anonymous_classes
From this RFC page:
Future Scope
The changes made by this patch mean named nested classes are ...
How do you run your own code alongside Tkinter's event loop?
...root=Tkinter.Tk()
self.s = Tkinter.StringVar()
self.s.set('Foo')
l = Tkinter.Label(self.root,textvariable=self.s)
l.pack()
threading.Thread.__init__(self)
def run(self):
self.root.mainloop()
app = MyTkApp()
app.start()
# Now the app should be r...
Why not abstract fields?
...c String getErrMsg() {
return this.errorMsg;
}
}
public class Foo extends Abstract {
public Foo() {
this.errorMsg = "Foo";
}
}
public class Bar extends Abstract {
public Bar() {
this.errorMsg = "Bar";
}
}
So your point is that you want to enforce the im...
Swift - How to convert String to Double
...se it returns 0 for non number values. This means that the doubleValue of "foo" and "0" are the same.)
let myDouble = Double(myString)
This returns an optional, so in cases like passing in "foo" where doubleValue would have returned 0, the failable intializer will return nil. You can use a guard,...
Difference between == and ===
...there's three types you need to keep in mind: literal types, such as 1 or "foo", which haven't been bound to a variable and normally only affect compilation since you generally don't deal with them during runtime; struct types such as Int and String which are what you get when you assign a literal t...
CreateElement with id?
...
Why not do this with jQuery?
var newDiv= $('<div/>', { id: 'foo', class: 'tclose'})
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