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SSH configuration: override the default username [closed]
...ostName example.net
User buck
The second example will set a username and is hostname specific, while the first example sets a username only. And when you use the second one you don't need to use ssh example.net; ssh example will be enough.
...
Difference between “include” and “require” in php
... tiposaurus.co.uk/2011/04/04/… "The key difference between require() and include() is that if you require() a file that can't be loaded (eg if it isn't there) then it generates a fatal error which will halt the execution of the page completely, and no more output will be generated. On the othe...
Difference of keywords 'typename' and 'class' in templates?
...
typename and class are interchangeable in the basic case of specifying a template:
template<class T>
class Foo
{
};
and
template<typename T>
class Foo
{
};
are equivalent.
Having said that, there are specific cases ...
Getting the last argument passed to a shell script
...last
This one is also pretty portable (again, should work with bash, ksh and sh) and it doesn't shift the arguments, which could be nice.
It uses the fact that for implicitly loops over the arguments if you don't tell it what to loop over, and the fact that for loop variables aren't scoped: they ...
What is SQL injection? [duplicate]
...jection happens when you interpolate some content into a SQL query string, and the result modifies the syntax of your query in ways you didn't intend.
It doesn't have to be malicious, it can be an accident. But accidental SQL injection is more likely to result in an error than in a vulnerability.
...
How do I format a number in Java?
...be 100.24
The DecimalFormat() seems to be the most dynamic way to do it, and it is also very easy to understand when reading others code.
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Create the perfect JPA entity [closed]
I've been working with JPA (implementation Hibernate) for some time now and each time I need to create entities I find myself struggling with issues as AccessType, immutable properties, equals/hashCode, ... .
So I decided to try and find out the general best practice for each issue and write this ...
How do I quickly rename a MySQL database (change schema name)?
...ew_db.$table;"; done;
Notes:
There is no space between the option -p and the password. If your database has no password, remove the -u username -ppassword part.
If some table has a trigger, it cannot be moved to another database using above method (will result Trigger in wrong schema error). I...
Should I avoid the use of set(Preferred|Maximum|Minimum)Size methods in Java Swing?
...ity between systems with different screen resolution.)
Some (incomplete, and unfortunately the links are broken due to migration of SwingLabs to java.net) technical reasons are for instance mentioned in the Rules (hehe) or in the link @bendicott found in his/her comment to my answer. Socially, pos...
Is there StartsWith or Contains in t sql with variables?
...Note that internally these work differently, especially w.r.t. performance and its use of indexes. For example, a query using colName LIKE 'prefix%' will be very fast when colName is indexed, but colName LIKE '%substring%' or colName LIKE '%suffix' will be slow because SQL Server does not create su...