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A dependent property in a ReferentialConstraint is mapped to a store-generated column
I get this error when writing to the database:
13 Answers
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Traverse all the Nodes of a JSON Object Tree with JavaScript
...the following. JSON and JavaScript Objects are not the same thing. JSON is based on the formatting of JavaScript objects, but JSON is just the notation; it is a string of characters representing an object. All JSON can be "parsed" into a JS object, but not all JS objects can be "stringified" into JS...
if/else in a list comprehension
...kinds of situations where you want to choose between two expression values based on some condition. This does the same as the ternary operator ?: that exists in other languages. For example:
value = 123
print(value, 'is', 'even' if value % 2 == 0 else 'odd')
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How do I use the ternary operator ( ? : ) in PHP as a shorthand for “if / else”?
Based on the examples from this page , I have the working and non-working code samples below.
14 Answers
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Android emulator doesn't take keyboard input - SDK tools rev 20
...rtant configuration settings below:
If you notice that the soft (screen-based) main keys Back, Home, etc. are missing from your emulator you can set hw.mainKeys=no to enable them.
Original answer
Even though the developer documentation says keyboard support is enabled by default it doesn't se...
How can I put strings in an array, split by new line?
I have a string with line breaks in my database. I want to convert that string into an array, and for every new line, jump one index place in the array.
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Why is there no Convert.toFloat() method?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Drop unused factor levels in a subsetted data frame
...data: to automatically download and install the perl". Use droplevels from baseR (stackoverflow.com/a/17218028/9295807)
– Vrokipal
Jun 20 '18 at 19:12
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What is the purpose of “&&” in a shell command?
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&& lets you do something based on whether the previous command completed successfully - that's why you tend to see it chained as do_something && do_something_else_that_depended_on_something.
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console.log javascript [Function]
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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