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java.lang.UnsupportedClassVersionError: Bad version number in .class file?
... I've had the issue, searched, found this answer, and it's been right. >_<
– AlbeyAmakiir
Apr 9 '13 at 23:49
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show 4 more comments
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Not equal != operator on NULL
...e IS NOT NULL, while to compare with not null value, you use <> 'YOUR_VALUE'. I can't say if my value equals or not equals to NULL, but I can say if my value is NULL or NOT NULL. I can compare if my value is something other than NULL.
...
What is the best way to check for Internet connectivity using .NET?
...WebClient())
using (client.OpenRead("http://google.com/generate_204"))
return true;
}
catch
{
return false;
}
}
share
|
improve this answer
...
Find size of an array in Perl
...
for [0..$#array] { print $array[$_ ] } works really well though if the purpose of getting the number of elements is to iterate through array. The advantage being that you get the element as well as a counter that are aligned.
– Westroc...
Pickle incompatibility of numpy arrays between Python 2 and 3
...mport gzip
import numpy
with open('mnist.pkl', 'rb') as f:
u = pickle._Unpickler(f)
u.encoding = 'latin1'
p = u.load()
print(p)
Unpickling it in Python 2 and then repickling it is only going to create the same problem again, so you need to save it in another format.
...
Force line-buffering of stdout when piping to tee
...ndard C (or even POSIX). It's probably better to use setvbuf(stdout, NULL, _IOLBF, 0), which is exactly equivalent.
– rvighne
Oct 11 '19 at 7:13
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What is the equivalent of Java's final in C#?
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http://en.csharp-online.net/CSharp_FAQ:_What_are_the_differences_between_CSharp_and_Java_constant_declarations
C# constants are declared using the const keyword for compile time constants or the readonly keyword for runtime constants. The semantics of consta...
ExpandableListView - hide indicator for groups with no children
... states.
When the group has no children, the corresponding state is 'state_empty'
See these reference links:
this and this
For state_empty, you can set a different image which is not confusing, or, simply use transparent color to display nothing...
Add this item in your stateful drawable along ...
find: missing argument to -exec
.... Instead, you can pass additional parameters to the shell after -c command_string (see man sh):
$ ls
$(echo damn.)
$ find * -exec sh -c 'echo "{}"' \;
damn.
$ find * -exec sh -c 'echo "$1"' - {} \;
$(echo damn.)
You see the $ thing is evaluated by the shell in the first example. Imagine there wa...
Modify UIImage renderingMode from a storyboard/xib file
...n for UIImageView:
extension UIImageView {
func setImageRenderingMode(_ renderMode: UIImage.RenderingMode) {
assert(image != nil, "Image must be set before setting rendering mode")
// AlwaysOriginal as an example
image = image?.withRenderingMode(.alwaysOriginal)
}
}
...