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What's the best way to send a signal to all members of a process group?
...he best way to do this using any common scripting languages? I am looking for a simple solution.
33 Answers
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Argparse: Way to include default values in '--help'?
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Use the argparse.ArgumentDefaultsHelpFormatter formatter:
parser = argparse.ArgumentParser(
# ... other options ...
formatter_class=argparse.ArgumentDefaultsHelpFormatter)
To quote the documentation:
The other formatter class available, ArgumentDef...
Iterating through a Collection, avoiding ConcurrentModificationException when removing objects in a
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Iterator.remove() is safe, you can use it like this:
List<String> list = new ArrayList<>();
// This is a clever way to create the iterator and call iterator.hasNext() like
// you would do in a while-loop. It would be ...
How to get the first element of an array?
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How to create index on JSON field in Postgres?
...w do I create an index on a JSON field? I tried it using the -> operator used for hstore but got the following error:
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how to split the ng-repeat data with three columns using bootstrap
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The most reliable and technically correct approach is to transform the data in the controller. Here's a simple chunk function and usage.
function chunk(arr, size) {
var newArr = [];
for (var i=0; i<arr.length; i+=size) {
newArr.push(arr.slice(i, i+...
Modify file in place (same dest) using Gulp.js and a globbing pattern
...s) and then place the resulting .css file into the same place it found the original file. The problem is, since I'm using a globbing pattern, I don't necessarily know where the original file is stored.
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How to get Maven project version to the bash command line
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The Maven Help Plugin is somehow already proposing something for this:
help:evaluate evaluates Maven expressions given by the user in an interactive mode.
Here is how you would invoke it on the command line to get the ${project.version}:
mvn org.apache.maven.plugins:maven-h...
Remove data.frame row names when using xtable
...tight (read: "stupid"), and I assume it's quite easy too. I'm writing a report and I want to use xtable package for LaTeX table generation (note that memisc package does the job, but say I want to do this solely with xtable ).
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How do you use Mongoose without defining a schema?
In previous versions of Mongoose (for node.js) there was an option to use it without defining a schema
5 Answers
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