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How to ignore a property in class if null, using json.net
...mportant thing - it works only with the concrete classes (Person, Account, etc.). when I tried this with Dictionary, it didn't work
– chester89
Apr 15 '16 at 10:31
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Detect if the app was launched/opened from a push notification
...tually becomes active, which is the same lifecycle method in all cases.
Sketch of our solution
Here are the main components of our solution:
Store a notificationUserInfo instance variable on the AppDelegate.
Set notificationUserInfo = nil in both applicationWillEnterForeground and didFinishLaunc...
Which @NotNull Java annotation should I use?
...er treats everyhing (instance variables, method parameters, generic types, etc) except local variables as if they have a @NonNull type by default. Per the documentation:
The NNEL default leads to the smallest number of explicit annotations in your code.
You can set a different default for a c...
What does Provider in JAX-RS mean?
...y (e.g for mapping to and from XML, translating the most common exceptions etc etc). You can also create your own providers as needed.
The JAX-RS specification is a good reference for reading up on these different provider types and what they do (see Chapter 4).
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How to remove RVM (Ruby Version Manager) from my system
...rofile and .bash_profile files, among other things.
You may also have an /etc/rvmrc file, or one in your home directory ~/.rvmrc that may need to be removed as well.
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How does the vim “write with sudo” trick work?
...command redirected using tee. The % is nothing but current file name i.e. /etc/apache2/conf.d/mediawiki.conf. In other words tee command is run as root and it takes standard input and write it to a file represented by %. However, this will prompt to reload file again (hit L to load changes in vim it...
Website screenshots
... you're rendering a site which makes use of webfonts, svg, canvas, flexbox etc then good luck getting an accurate screenshot.. If you do want accurate screenshots check my answer which uses urlbox
– cjroebuck
Apr 27 '17 at 8:49
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Why is it important to override GetHashCode when Equals method is overridden?
...t if your item will be used as a key in a dictionary, or HashSet<T>, etc - since this is used (in the absence of a custom IEqualityComparer<T>) to group items into buckets. If the hash-code for two items does not match, they may never be considered equal (Equals will simply never be call...
Is there a performance gain in using single quotes vs double quotes in ruby?
...ferences that are not significant and due to other factors (GC kicking in, etc.); remember, there can't be any difference in this case! Micro benchmarks like these are difficult to get right. See my gem fruity for a decent tool for this.
Note that if there is interpolation of the form "...#{...}......
How to access command line arguments of the caller inside a function?
...mand-line arguments through the commandline_args variable, not $@, $1, $2, etc., but they're available. I'm unaware of any way to assign directly to the argument array, but if someone knows one, please enlighten me!
Also, note the way I've used and quoted $@ - this is how you ensure special charact...