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How to check whether a given string is valid JSON in Java
How do I validate a JSON string in Java? Or could I parse it using regular expressions?
19 Answers
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Differences between Exception and Error
...ions are the bread and butter of exception handling. The Javadoc explains it well:
An Error is a subclass of Throwable that indicates serious problems that a
reasonable application should not try to catch. Most such errors are abnormal
conditions.
Look at a few of the subclasses of Error,...
difference between primary key and unique key
...
Primary Key:
There can only be one primary key in a table
In some DBMS it cannot be NULL - e.g. MySQL adds NOT NULL
Primary Key is a unique key identifier of the record
Unique Key:
Can be more than one unique key in one table
Unique key can have NULL values
It can be a candidate key
Unique k...
Swapping two variable value without using third variable
...
Using the xor swap algorithm
void xorSwap (int* x, int* y) {
if (x != y) { //ensure that memory locations are different
*x ^= *y;
*y ^= *x;
*x ^= *y;
}
}
Why the test?
The test is to ensure that x and y have diffe...
I don't understand -Wl,-rpath -Wl,
...follow
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edited Mar 1 '18 at 12:51
answered Jul 3 '11 at 10:47
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Found conflicts between different versions of the same dependent assembly that could not be resolved
...ts that the build succeeded. However, when I view the Error List Window , it shows me this warning:
22 Answers
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Creating a JSON response using Django and Python
...erver side Ajax response script into a Django HttpResponse, but apparently it's not working.
15 Answers
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Automatically start forever (node) on system restart
...stem restart. Is there any way I can automatically start the node server (with forever) when the system restarts?
15 Answer...
Test if number is odd or even
... most basic way to find out if a number/variable is odd or even in PHP?
Is it something to do with mod?
17 Answers
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What do all of Scala's symbolic operators mean?
...mbols
Automatically imported methods
Common methods
Syntactic sugars/composition
It is fortunate, then, that most categories are represented in the question:
-> // Automatically imported method
||= // Syntactic sugar
++= // Syntactic sugar/composition or common method
<= // Common...