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How to clone a case class instance and change just one field in Scala?
...na1 = messageLens.set(existingPersona)(Set.empty)
// or by other operation based on current value.
val newPersona2 = messageLens.modify(existingPersona)(_ + "iPad")
// Results:
// newPersona1: Persona(store,apple,Set())
// newPersona2: Persona(store,apple,Set(iPhone, iPad))
Moreover, in case you ...
Post parameter is always null
... case I am sending data across the wire which is zipped json which is then base64'd. All this from an android app.
The original signature of my web endpoint looked like this (using [FromBody]) :
My fix for this issue was to revert to using a HttpRequestMessage for the signature of my endpoint...
Can a Byte[] Array be written to a file in C#?
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Based on the first sentence of the question: "I'm trying to write out a Byte[] array representing a complete file to a file."
The path of least resistance would be:
File.WriteAllBytes(string path, byte[] bytes)
Documented...
Good reasons to prohibit inheritance in Java?
...o for final methods.
To avoid derived class from overriding a particular base class functionality.
This is for security purpose, where base class is giving some important core functionality of the framework where derived class is not supposed to change it.
Final methods are faster than instance ...
What is the difference between encode/decode?
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Just as a side note - you can select some pervert encoding, like 'zip', 'base64', 'rot' and some of them will convert from string to string, but I believe the most common case is one that involves UTF-8/UTF-16 and string.
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ListBox vs. ListView - how to choose for data binding
... has a simple list of items that I intend to be able to search/sort/filter based on user input. The data binding demo ( http://msdn.microsoft.com/en-us/library/ms771319.aspx ) uses a ListBox with a CollectionViewSource.
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Python ElementTree module: How to ignore the namespace of XML files to locate matching element when
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el.tag = postfix # strip all namespaces
root = it.root
This is based on the discussion here:
http://bugs.python.org/issue18304
Update: rpartition instead of partition makes sure you get the tag name in postfix even if there is no namespace. Thus you could condense it:
for _, el in it:
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How can I get current date in Android?
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This is nothing to do with android as it is java based so you could use
private String getDateTime() {
DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
Date date = new Date();
return dateFormat.format(date);
}
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Best way to store date/time in mongodb
...goDB shell version: 2.4.9
connecting to: 10.0.1.223/test
Create your database by inserting items
> db.penguins.insert({"penguin": "skipper"})
> db.penguins.insert({"penguin": "kowalski"})
>
Lets make that database the one we are on now
> use penguins
switched to db penguins
Get ...
Get city name using geolocation
I managed to get the user's latitude and longitude using HTML-based geolocation.
11 Answers
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