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PostgreSQL delete all content
...har(30),
constraint pk_customer primary key (customer_id)
);
create table orders (
order_id int not null,
number int not null,
customer_id int not null,
constraint pk_order primary key (order_id),
constraint fk_customer foreign key (customer_id) references customers(customer_id)
);
create table lo...
C++ Structure Initialization
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@user1043000 well, for one, in this case the order in which you put your members is of upmost importance. If you add a field in the middle of your structure, you will have to go back to this code and look for the exact spot in which to insert your new initialization, wh...
How to remove jar file from local maven repository which was added with install:install-file?
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This approach also requires a maven project in order to run the command. This doesn't appear to work if you ran the install command that the OP specified in the context of say a Gradle build.
– jdonmoyer
Oct 24 '14 at 13:41
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Breadth First Vs Depth First
... / / \
D E F
A depth first traversal would visit the nodes in this order
A, B, D, C, E, F
Notice that you go all the way down one leg before moving on.
A breadth first traversal would visit the node in this order
A, B, C, D, E, F
Here we work all the way across each level before going...
Correct idiom for managing multiple chained resources in try-with-resources block?
...r comments: simplest is (2) to use Closeable resources and declare them in order in the try-with-resources clause. If you only have AutoCloseable, you can wrap them in another (nested) class that just checks that close is only called once (Facade Pattern), e.g. by having private bool isClosed;. In p...
What is the difference between the OAuth Authorization Code and Implicit workflows? When to use each
... something else, that the (browser) client needs to pass to the server, in order to allow the server to act on behalf of the particular client.
– Cheeso
Jun 29 '15 at 22:53
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MySQL: Sort GROUP_CONCAT values
...ion_group-concat:
SELECT student_name,
GROUP_CONCAT(DISTINCT test_score ORDER BY test_score DESC SEPARATOR ' ')
FROM student
GROUP BY student_name;
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What does the C++ standard state the size of int, long type to be?
...luates to a number of bits high enough to contain required ranges, and
the ordering of type is still valid (e.g. sizeof(int) <= sizeof(long)).
Putting this all together, we are guaranteed that:
char, signed char, and unsigned char are at least 8 bits
signed short, unsigned short, signed int, an...
Why shouldn't Java enum literals be able to have generic type parameters?
... generic method like
public static MyEnum valueOf(String name);
in order to call it like MyEnum<String> myStringEnum = MyEnum.value("some string property"), that wouldn't work either.
For example what if you call MyEnum<Int> myIntEnum = MyEnum.<Int>value("some string proper...
Why should a function have only one exit-point? [closed]
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This became especially true when you needed to interject assignments in order to examine state (replaced with watch expressions in modern debuggers). It was also too easy to alter the control flow in ways that hid the problem or broke the execution altogether.
Single-exit methods were easier to ...