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Efficiently test if a port is open on Linux?
...ise I found out recently is that Bash natively supports tcp connections as file descriptors. To use:
exec 6<>/dev/tcp/ip.addr.of.server/445
echo -e "GET / HTTP/1.0\n" >&6
cat <&6
I'm using 6 as the file descriptor because 0,1,2 are stdin, stdout, and stderr. 5 is sometimes use...
Why is Spring's ApplicationContext.getBean considered bad?
...mpile time but matches one of the implementations defined in my spring.xml file.
– Alex Worden
Jan 25 '11 at 20:20
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CSS: Control space between bullet and
...ing pixels, ems or %
Disadvantages:
Adds an extra (albeit small) image file to your page, increasing the page weight
If a user increases the text size on their browser, the bullet will stay at the original size. It'll also likely get further out of position as the text size increases
If you're d...
Unable to run app in Simulator: Xcode beta 6 iOS 8
...ction
Make sure you open Xcode 6 from Applications not from the setup file.
Finally restarting Mac solve the problem in my case.
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How to find a Java Memory Leak
...
I use following approach to finding memory leaks in Java. I've used jProfiler with great success, but I believe that any specialized tool with graphing capabilities (diffs are easier to analyze in graphical form) will work.
Start the application and wait until it get to "stable" state, when all...
Run cron job only if it isn't already running
...you did in grep? rsanden's answer prevents that sort of problem using a pidfile.
– Elias Dorneles
Oct 6 '12 at 3:24
13
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How do I mock an autowired @Value field in Spring with Mockito?
...olution for mocking the properties that are retrieving from the properties file.
– Antony Sampath Kumar Reddy
Dec 2 '19 at 6:46
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Sourcemaps off by one line in Chrome, with Ruby on Rails, Webpack, and React JS
...uby on Rails application to generate a concatenated, unminified JavaScript file composed of a couple dozen modules. Most of those modules are ReactJS components, and are parsed by the jsx loader. The output from Webpack is then included in the application.js file along with some other JavaScri...
How to include a Font Awesome icon in React's render()
...e.
npm install --save font-awesome
import font-awesome to your index.js file. Just add below line to your index.js file
import '../node_modules/font-awesome/css/font-awesome.min.css';
or
import 'font-awesome/css/font-awesome.min.css';
Don't forget to use className as attribute
render:...
cscope or ctags why choose one over the other? [closed]
...or bigger, unknown code bases. The set up is a pain because cscope needs a file containing a list of names of files to parse. Also in vim, by default there are no key bindings set up - you need to run :cscope blah blah manually.
To solve the fist problem I've got a bash script cscope_gen.sh that lo...