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Why is a combiner needed for reduce method that converts type in java 8
...l streams, or put another way, a particular API shouldn't prevent a stream from running correctly either sequentially or in parallel. If your lambdas have the right properties (associative, non-interfering, etc.) a stream run sequentially or in parallel should give the same results.
Let's first con...
What are the minimum margins most printers can handle?
... 'full page'. This is a hardware feature and useful when mimicking output from old XES type printers that had a smaller margins or something like an IBM 3812. You can always open Word and set page margins to 0, Word will prompt to fix these, the values it enters are the smallest margins the device...
How do I find the location of my Python site-packages directory?
...hen you run:
python -m site
For a more concise list run getsitepackages from the site module in Python code:
python -c 'import site; print(site.getsitepackages())'
Note: With virtualenvs getsitepackages is not available, sys.path from above will list the virtualenv's site-packages directory co...
Scatterplot with too many points
...pecify your own low and high colors, or use scale_fill_brewer() and choose from one of the sequential palettes.
– joran
Aug 12 '14 at 14:04
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Identifying the dependency relationship for python packages installed with pip
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An updated version of the script from my previous comment is pip freeze | grep -v "\-e" | sed s/\=\=.*// | awk 'system("pip show " $1)' | grep -E '^(Name:|Requires:)' | sed s/Name:/\\\nName:/ -- but it seems that pipdeptree is now a better solution.
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Using Enums while parsing JSON with GSON
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From the documentation for Gson:
Gson provides default serialization and deserialization for Enums... If you would prefer to change the default representation, you can do so by registering a type adapter through GsonBuild...
How to log cron jobs?
...* * myjob.sh >> /var/log/myjob.log 2>&1
will log all output from the cron job to /var/log/myjob.log
You might use mail to send emails. Most systems will send unhandled cron job output by email to root or the corresponding user.
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How to escape double quotes in a title attribute
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Here's a snippet of the HTML escape characters taken from a cached page on archive.org:
&#060 | less than sign <
&#064 | at sign @
&#093 | right bracket ]
&#123 | left curly brace {
&#125 | right curl...
How to close current tab in a browser window?
...you are allowed to close the window with javascript. Firefox disallows you from closing other windows. I believe IE will ask the user for confirmation. Other browsers may vary.
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Unable to forward search Bash history similarly as with CTRL-r
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You can search forward as well. From the bash info manual, "8.2.5 Searching for Commands in the History":
To search backward in the history for a particular string, type C-r.
Typing C-s searches forward through the history.
The problem with Ctrl-S h...