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How do you match only valid roman numerals with a regular expression?
...input.matches(regx)) -> this evalulates to false for MMMCM / MMMM in java.
– amIT
Aug 10 '14 at 14:07
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How do I check if a list is empty?
...le or your array is wrapped in some container that tracks the length. C++, Java, C# have such containers and implement some "length" method efficiently. C has no such thing, you have to roll your own. Statically allocated C arrays are just pointers to a memory space that is guaranteed to have enough...
How do ACID and database transactions work?
...
Check out the Transactions chapter in my High-Performance Java Persistence book for a detailed answer for all those questions.
– Vlad Mihalcea
Feb 16 at 21:20
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Compare object instances for equality by their attributes
...ance, Python will compare them by keys / values automatically. This is not Java...
– e-satis
Aug 4 '09 at 16:32
The fi...
How to unit test an object with database queries
...'ll be slow, but less error prone.
Inject the database. (Example in pseudo-Java, but applies to all OO-languages)
class Database {
public Result query(String query) {... real db here ...}
}
class MockDatabase extends Database {
public Result query(String query) {
return "mock result";
}...
What killed my process and why?
...ry any process can consume (for example JVM memory can be restricted using JAVA_OPTS)
See the logs and google :)
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Are braces necessary in one-line statements in JavaScript?
...d that leaving the curly braces in one-line statements could be harmful in JavaScript. I don't remember the reasoning anymore and a Google search did not help much.
...
What are all the possible values for HTTP “Content-Type” header?
...ia-types.xhtml
The most common type are:
Type application
application/java-archive
application/EDI-X12
application/EDIFACT
application/javascript
application/octet-stream
application/ogg
application/pdf
application/xhtml+xml
application/x-shockwave-flash
application/json...
What is the point of interfaces in PHP?
... use case that you cannot address with abstract classes.
From Thinking in Java:
An interface says, “This is what all classes that implement this particular interface will look like.” Thus, any code that uses a particular interface knows what methods can be called for that interface, and tha...
Is MonoTouch now banned on the iPhone? [closed]
...se:
...Applications must be originally written in Objective-C, C, C++, or JavaScript as executed by the iPhone OS WebKit engine...
They even hammer it in a little further:
Applications that link to Documented APIs through an intermediary translation or compatibility layer or tool are prohibited
...