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Skip download if files exist in wget?
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-nc doesn't prevent the sending of the HTTP request and subsequent downloading of the file. It just doesn't do anything after downloading the file if the file has already been fully retrieved. Is there anyway to prevent making the HTTP request if the file already exists? stack...
Mixins vs. Traits
What is the difference between Mixins and Traits?
2 Answers
2
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NSUserDefaults - How to tell if a key exists
I'm working on a small iPhone app, and I am using NSUserDefaults as my data persistence. It only has to keep track of a few things, such as some names and some numbers so I figure I might as well keep it simple.
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How do I run a Node.js application as its own process?
...means forever, monit, PM2, etc. are no longer necessary - your OS already handles these tasks.
Make a myapp.service file (replacing 'myapp' with your app's name, obviously):
[Unit]
Description=My app
[Service]
ExecStart=/var/www/myapp/app.js
Restart=always
User=nobody
# Note Debian/Ubuntu uses 'n...
jQuery set radio button
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+1 for prop vs attr. attr deprecated for properties and no longer work in jQuery 2.0 ))
– gavenkoa
Dec 20 '13 at 16:09
add a comment
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Why shouldn't Java enum literals be able to have generic type parameters?
... the latter because of type erasure. But there is one thing I don't understand, Why can't I create an enum like this:
7 Ans...
nuget 'packages' element is not declared warning
...w why Visual Studio is not creating that xsd file?
– Anders Lindén
Aug 23 '12 at 6:42
1
u missed...
How can I suppress all output from a command using Bash?
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The following sends standard output to the null device (bit bucket).
scriptname >/dev/null
And if you also want error messages to be sent there, use one of (the first may not work in all shells):
scriptname &>/dev/null
scriptname >...
Spring: Why do we autowire the interface and not the implemented class?
...o use.
As long as there is only a single implementation of the interface and that implementation is annotated with @Component with Spring's component scan enabled, Spring framework can find out the (interface, implementation) pair. If component scan is not enabled, then you have to define the bean...
Declaring array of objects
I have a variable which is an array and I want every element of the array to act as an object by default. To achieve this, I can do something like this in my code.
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