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Can we omit parentheses when creating an object using the “new” operator?
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered Jun 14 '10 at 4:27
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How to check if a String contains only ASCII?
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From Guava 19.0 onward, you may use:
boolean isAscii = CharMatcher.ascii().matchesAllOf(someString);
This uses the matchesAllOf(someString) method which relies on the factory method ascii() rather than the now deprecated ASCII singleton...
matplotlib does not show my drawings although I call pyplot.show()
...b_fname()
In [1]: import matplotlib.pyplot as p
In [2]: p.plot(range(20),range(20))
Out[2]: [<matplotlib.lines.Line2D object at 0xa64932c>]
In [3]: p.show()
If you edit ~/.matplotlib/matplotlibrc and change the backend to something like GtkAgg, you should see a plot. You can list all...
Regex Named Groups in Java
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(Update: August 2011)
As geofflane mentions in his answer, Java 7 now support named groups.
tchrist points out in the comment that the support is limited.
He details the limitations in his great answer "Java Regex Helper"
Java 7 regex nam...
How to get body of a POST in php?
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answered Jan 20 '12 at 18:09
rdlowreyrdlowrey
36k99 gold badges7474 silver badges9696 bronze badges
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How to write a multidimensional array to a text file?
... file.
E.g. This (a 2D array) works fine
import numpy as np
x = np.arange(20).reshape((4,5))
np.savetxt('test.txt', x)
While the same thing would fail (with a rather uninformative error: TypeError: float argument required, not numpy.ndarray) for a 3D array:
import numpy as np
x = np.arange(200).res...
What is an undefined reference/unresolved external symbol error and how do I fix it?
... exist for other compilers/ platforms.
Common error messages are error LNK2001, error LNK1120, error LNK2019 for Microsoft Visual Studio and undefined reference to symbolName for GCC.
The code:
struct X
{
virtual void foo();
};
struct Y : X
{
void foo() {}
};
struct A
{
virtual ~A() = 0;
};...
Change computer name for a TFS Workspace
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tf workspaces /updateComputerName:MyOldComputerName /s:"http://MyServer:8080/tfs/MyCollection"
It had to be run from the computer I wanted to assign the workspace to (that is how it gets the new computer name.
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What does the construct x = x || y mean?
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answered May 10 '10 at 11:00
cletuscletus
561k152152 gold badges873873 silver badges927927 bronze badges
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