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Should I instantiate instance variables on declaration or in the constructor?
...'s discussable: if you initialise all your fields in the constructor, you know exactly that when you are reading the code, you have just one place where to search...
– nbro
May 8 '15 at 10:42
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What do two question marks together mean in C#?
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Tangential but related: It's now in Swift, but it's very different: "Nil Coalescing Operator" developer.apple.com/library/ios/documentation/Swift/Conceptual/…
– Dan Rosenstark
Oct 14 '15 at 19:21
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Adding a library/JAR to an Eclipse Android project
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Now for the missing class problem.
I'm an Eclipse Java EE developer and have been in the habit for many years of adding third-party libraries via the "User Library" mechanism in Build Path. Of course, there are at least 3 wa...
C# XML Documentation Website Link
... works in VS 16.4.2. Not sure what version it was added, only that you can now click links in the method info window.
– JB06
Jan 9 at 17:35
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Generating v5 UUID. What is name and namespace?
...ducible UUID for each namespace using "uuid -v5 $ROOTUUID $NAMESPACENAME". Now you can create unique UUIDs for keys within a namespace using "uuid -v5 $NAMESPACEUUID $KEY". These UUIDs can be thrown into a single key-value store with high probability of avoiding collision. This process can be repea...
node.js remove file
...s.exists. Because according to the latest node.js documentation, fs.exists now deprecated.
For example:-
fs.stat('./server/upload/my.csv', function (err, stats) {
console.log(stats);//here we got all information of file in stats variable
if (err) {
return console.error(err);
}
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Custom HTTP headers : naming conventions
...ng application protocols to support both names (E.g, x-gzip & gzip are now equivalent). So, the official recommendation is to just name them sensibly without the "X-" prefix.
Update 2: On June 2012, the deprecation of recommendation to use the "X-" prefix has become official as RFC 6648. Belo...
How to validate inputs dynamically created using ng-repeat, ng-show (angular)
...e inputs, but despite the string literals in HTML appearing correct, it is now working.
14 Answers
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What does this mean: Failure [INSTALL_FAILED_CONTAINER_ERROR]?
...ecure folder, only root has access. I was able to run the app before, only now since a while, cannot run it and it gives the above error.
– Mathias Conradt
Apr 21 '11 at 13:27
1
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How do I install the yaml package for Python?
...Note that PySyck docs recommend using PyYaml, since syck is out of date). Now you know a specific package name, you can install it:
$ pip install pyyaml
If you want to install python yaml system-wide in linux, you can also use a package manager, like aptitude or yum:
$ sudo apt-get install pyth...