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What is N-Tier architecture?
...e-deck interfaces, such that one can in fact replace a particular tier without having to modify even one line of code. We often see the benefits of this, for instance in scenarios where you want to be able to use more than one database (in which case you have a double-interface between the control...
How can I define a composite primary key in SQL?
... during a google search... It seems there's an inconsistency in the text about which columns are used (or not) for the default index(es?). Furthermore, it assumes that every RDBMS will automatically create an index on the primary key, but since it is not required by any standard, there might be corn...
In Maven 2, how do I know from which dependency comes a transitive dependency?
... the Maven site:
mvn dependency:tree -Dincludes=velocity:velocity
might output
[INFO] [dependency:tree]
[INFO] org.apache.maven.plugins:maven-dependency-plugin:maven-plugin:2.0-alpha-5-SNAPSHOT
[INFO] \- org.apache.maven.doxia:doxia-site-renderer:jar:1.0-alpha-8:compile
[INFO] \- org.codehaus...
Squash the first two commits in Git? [duplicate]
...st commit that we want to form the initial commit (detach HEAD):
git checkout <sha1_for_B>
Reset the branch pointer to the initial commit, but leaving the index and working tree intact:
git reset --soft <sha1_for_A>
Amend the initial tree using the tree from 'B':
git commit --amend
...
How to find the length of a string in R
How to find the length of a string (number of characters in a string) without splitting it in R? I know how to find the length of a list but not of a string.
...
What does the comma operator , do?
...e while (1) with a break; statement in the body. Trying to force the break-out part of the code up into the while test or down into the do-while test, is often a waste of energy and makes the code harder to understand.
– potrzebie
Sep 27 '12 at 6:20
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Invoking a static method using reflection
...getMethod because getMethod (or getDeclaredMethod) requires that you work out the parameter types in great detail. It just depends if micro efficiency matters - Java iteration is very quick so unless you're calling the method millions of times in some inner loop then iteration will be fast enough
...
How to find an element by matching exact text of the element in Capybara
...r the value of the :text key:
find("a", :text => /\ABerlin\z/)
Check out the 'Options Hash' section of the Method: Capybara::Node::Finders#all documentation.
PS: text matches are case sensitive. Your example code actually raises an error:
find("a", :text => "berlin")
# => Capybara::Ele...
How do I merge a git tag onto a branch
...
You mean this?
git checkout destination_branch
git merge tag_name
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Why can I type alias functions and use them without casting?
...
Turns out, this is a misunderstanding that I had about how Go dealt with types, which can be resolved by reading the relevant part of the spec:
http://golang.org/ref/spec#Type_identity
The relevant distinction that I was unaware ...