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When do you use map vs flatMap in RxJava?
...ten" this observable of observables (you might start to see where the name _flat_Map comes from). RxJava provides a few ways to flatten observables and for sake of simplicity lets assume merge is what we want. Merge basically takes a bunch of observables and emits whenever any of them emits. (Lots o...
How do I append text to a file?
...
better sudo rm -r / than sudo rm -rf /! ^_^ Is there a flag that would ask for confirmation before overwriting the contents of an existing file with >? Aliasing that to always use such a flag seems like it would be a good idea.
– sixty4bit
...
Spring Boot application as a Service
...app
OR
sudo ln -s ~/myproject/build/libs/myapp-1.0.jar /etc/init.d/myapp_servicename
After that you can do the usual
/etc/init.d/myapp start
Then setup a link in whichever runlevel you want the app to start/stop in on boot if so desired.
As a systemd service
To run a Spring Boot applica...
Citing the author of a blockquote using Markdown syntax
... two hyphens.", -- @Evan, stackoverflow.com/a/2002150/934739#comment1923634_2002150.
– Gerard Roche
Sep 10 '16 at 8:10
...
Explain the concept of a stack frame in a nutshell
... edited Mar 9 at 8:50
virmis_007
14522 silver badges1717 bronze badges
answered Oct 18 '16 at 11:04
Aadity...
Difference between local and global indexes in DynamoDB
...s from the index, not from the base table.
– ethanxyz_0
Aug 8 '17 at 2:00
1
@bsd It would make se...
HintPath vs ReferencePath in Visual Studio
...ntrol as well:
https://msdn.microsoft.com/en-us/library/ee817675.aspx#tdlg_ch4_includeoutersystemassemblieswithprojects
Excerpt:
To include and then reference an outer-system assembly
1. In Solution Explorer, right-click the project that needs to reference the assembly,,and then click Add Existi...
When to use os.name, sys.platform, or platform.system?
...,release,version,machine = os.uname()
except AttributeError:
no_os_uname = 1
if no_os_uname or not filter(None, (system, node, release, version, machine)):
# Hmm, no there is either no uname or uname has returned
#'unknowns'... we'll have to poke around the system th...
What's an elegant way to conditionally add a class to an HTML element in a view?
...ad' %>">
Finally, you can use Rail's record tag helpers such as div_for, which will automagically set your ID and class based on the record you give it. Given a Person with id 47:
# <div id="person_47" class="person good">
<% div_for @person, class: (@success ? 'good' : 'bad') do ...
git remove merge commit from history
...re the branches have diverged, I see all the commits of the purple branch -_-
– Benjamin Toueg
Jul 10 '13 at 18:15
1
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