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Elastic search, multiple indexes vs one index and types for different data sets?
...e an application developed using the MVC pattern and I would like to index now multiple models of it, this means each model has a different data structure.
...
How to read a single char from the console in Java (as the user types it)?
...ter key required.) On UNIX systems, the 'stty' command can change modes.
Now, with respect to Java... see Non blocking console input in Python and Java. Excerpt:
If your program must be console based,
you have to switch your terminal out
of line mode into character mode, and
remember to...
WITH CHECK ADD CONSTRAINT followed by CHECK CONSTRAINT vs. ADD CONSTRAINT
...e trusted to accurately represent the state of the data in the table right now. It can, however, but can be trusted to check data added and modified in the future.
Additionally, untrusted constraints are disregarded by the query optimiser.
The code to enable check constraints and foreign key const...
POSTing a @OneToMany sub-resource association in Spring Data REST
... }
}
Depatment Entity will not contain any mappping for forign key...so now when you will try the POST request for adding Employee with Department in single json request then it will be added....
share
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How to POST raw whole JSON in the body of a Retrofit request?
...:"kat"}
The Gson docs have much more on how object serialization works.
Now, if you really really want to send "raw" JSON as the body yourself (but please use Gson for this!) you still can using TypedInput:
interface Foo {
@POST("/jayson")
FooResponse postRawJson(@Body TypedInput body);
}
...
How can I declare and use Boolean variables in a shell script?
....
Footnotes
Miku's answer has since been edited and no longer contains (known) flaws.
Not an exhaustive list.
A valid command in this context means a command that exists. It doesn't matter if the command is used correctly or incorrectly. E.g. man woman would still be considered a valid command, ev...
How to do ToString for a possibly null object?
...
C# 6.0 Edit:
With C# 6.0 we can now have a succinct, cast-free version of the orignal method:
string s = myObj?.ToString() ?? "";
Or even using interpolation:
string s = $"{myObj}";
Original Answer:
string s = (myObj ?? String.Empty).ToString();
or
strin...
ReactJS Two components communicating
... arrange those components. A few example scenarios that come to mind right now:
<Filters /> is a child component of <List />
Both <Filters /> and <List /> are children of a parent component
<Filters /> and <List /> live in separate root components entirely.
Th...
pip installing in global site-packages instead of virtualenv
...anged it, activated the virtualenv and installed the Markdown package. Pip now installs in the virtualenv site-packages folder instead of the global one.
– ƘɌỈSƬƠƑ
Jan 6 '14 at 22:45
...
What is an optional value in Swift?
...String are completely different types.
Here's the most important thing to know: An optional is a kind of container. An optional String is a container which might contain a String. An optional Int is a container which might contain an Int. Think of an optional as a kind of parcel. Before you open it ...