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Error handling with node.js streams
What's the correct way to handle errors with streams? I already know there's an 'error' event you can listen on, but I want to know some more details about arbitrarily complicated situations.
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How to make RatingBar to show five stars
...roblem is that the number of stars doesn't seem to do anything at all. In portrait-layout I get 6 stars and when I flip the phone I get about 10 stars. I tried to set the number of stars in my Activity ( myBar.setNumStars(5) ) that loads the xml but there was no success with that option either.
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How to find out which view is focused?
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For some reason it returns null after cycling all child views with "next" action.
– WindRider
Dec 13 '14 at 16:44
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setTimeout in for-loop does not print consecutive values [duplicate]
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You have to arrange for a distinct copy of "i" to be present for each of the timeout functions.
function doSetTimeout(i) {
setTimeout(function() { alert(i); }, 100);
}
for (var i = 1; i <= 2; ++i)
doSetTimeout(i);
If you don't do somet...
Callback to a Fragment from a DialogFragment
...n new AlertDialog.Builder(getActivity())
.setTitle(R.string.ERROR)
.setIcon(android.R.drawable.ic_dialog_alert)
.setPositiveButton(R.string.ok_button,
new DialogInterface.OnClickListener() {
public void onClick(DialogInt...
Multi-line string with extra space (preserved indentation)
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Heredoc sounds more convenient for this purpose. It is used to send multiple commands to a command interpreter program like ex or cat
cat << EndOfMessage
This is line 1.
This is line 2.
Line 3.
EndOfMessage
The string after <<...
How do I add tab completion to the Python shell?
...ate a file .pythonrc
# ~/.pythonrc
# enable syntax completion
try:
import readline
except ImportError:
print("Module readline not available.")
else:
import rlcompleter
readline.parse_and_bind("tab: complete")
then in your .bashrc file, add
export PYTHONSTARTUP=~/.pythonrc
That ...
How can I verify if a Windows Service is running
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I guess something like this would work:
Add System.ServiceProcess to your project references (It's on the .NET tab).
using System.ServiceProcess;
ServiceController sc = new ServiceController(SERVICENAME);
switch (sc.Status)
{
case ServiceControllerStat...
How to implement a Map with multiple keys? [duplicate]
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Commons-collections provides just what you are looking for:
https://commons.apache.org/proper/commons-collections/apidocs/
Looks like now the commons-collections is typed.
A typed version can be found at:
https://github.com/megamattron/collections-generic
This will exactly su...
How to calculate the angle between a line and the horizontal axis?
...tc) I need to determine how to calculate the angle between a line and the horizontal axis?
9 Answers
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