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android View not attached to window manager
...e on a screen orientation change, the activity finished before the AsyncTask with the progress dialog completed. I seemed to resolve this by setting the dialog to null onPause() and then checking this in the AsyncTask before dismissing.
@Override
public void onPause() {
super.onPause();
i...
What does “SyntaxError: Missing parentheses in call to 'print'” mean in Python?
...nt statement:
print "Hello, World!"
The statement above does not work in Python 3. In Python 3 you need to add parentheses around the value to be printed:
print("Hello, World!")
“SyntaxError: Missing parentheses in call to 'print'” is a new error message that was added in Python 3.4....
Passing arrays as parameters in bash
...
You can pass multiple arrays as arguments using something like this:
takes_ary_as_arg()
{
declare -a argAry1=("${!1}")
echo "${argAry1[@]}"
declare -a argAry2=("${!2}")
echo "${argAry2[@]}"
}
try_with_local_arys()
{
# array variables could have local scope
lo...
When to use an assertion and when to use an exception
Most of the time I will use an exception to check for a condition in my code, I wonder when it is an appropriate time to use an assertion?
...
Ruby, remove last N characters from a string?
... in a fast and readable manner.
The docs on the methods are here.
If you know what the suffix is, this is idiomatic (and I'd argue, even more readable than other answers here):
'abc123'.delete_suffix('123') # => "abc"
'abc123'.delete_suffix!('123') # => "abc"
It's even significantl...
Zipping streams using JDK8 with lambda (java.util.stream.Streams.zip)
In JDK 8 with lambda b93 there was a class java.util.stream.Streams.zip in b93 which could be used to zip streams (this is illustrated in the tutorial Exploring Java8 Lambdas. Part 1 by Dhananjay Nene ). This function :
...
How to enter in a Docker container already running with a new TTY
... container that is running the Apache service in the foreground. I would like to be able to access the container from another shell in order to "poke around" inside it and examine the files. At the moment, if I attach to the container, I am left looking at the Apache daemon and cannot run any comman...
How can I lookup a Java enum from its String value?
I would like to lookup an enum from its string value (or possibly any other value). I've tried the following code but it doesn't allow static in initialisers. Is there a simple way?
...
How to add Git's branch name to the commit message?
...
Use the prepare-commit-msg or commit-msg githook.
There are examples already in your PROJECT/.git/hooks/ directory.
As a security measure, you will have to manually enable such a hook on each repository you wish to use it. Though, you can commit the script and copy it o...
jQuery `.is(“:visible”)` not working in Chrome
The above code runs smooth in Firefox, but doesn't seem to work in Chrome. In Chrome it shows .is(":visible") = false even when it is true .
...