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Insert a line at specific line number with sed or awk
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Yes, the -i switch is specific for GNU-sed.
– user unknown
Dec 21 '12 at 6:39
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comparing sbt and Gradle [closed]
...py with Gradle in java/groovy projects, and I know there's a scala plugin for Gradle.
5 Answers
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PHP page redirect [duplicate]
...Also, from the documentation:
Remember that header() must be called before any actual output is sent, either by normal HTML tags, blank lines in a file, or from PHP. It is a very common error to read code with include(), or require(), functions, or another file access function, and have spaces o...
Best practice to validate null and empty collection in Java
...ty and MapUtils.isEmpty() methods which respectively check if a collection or a map is empty or null (i.e. they are "null-safe").
The code behind these methods is more or less what user @icza has written in his answer.
Regardless of what you do, remember that the less code you write, the less code...
Why does the C++ STL not provide any “tree” containers?
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There are two reasons you could want to use a tree:
You want to mirror the problem using a tree-like structure:
For this we have boost graph library
Or you want a container that has tree like access characteristics
For this we have
std::map (and std::multimap)
std::set (and std::multiset)
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How do I stop a web page from scrolling to the top when a link is clicked that triggers JavaScript?
When I have a link that is wired-up with a jQuery or JavaScript event such as:
15 Answers
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PHP: How to send HTTP response code?
... make responses with HTTP response codes (status-codes), like HTTP 200 OK, or some 4XX or 5XX code.
9 Answers
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How to get unique device hardware id in Android? [duplicate]
...ow to get the unique device ID in Android which cannot be changed when performing a phone reset or OS update?
3 Answers
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How to cast an Object to an int
... you're sure that this object is an Integer :
int i = (Integer) object;
Or, starting from Java 7, you can equivalently write:
int i = (int) object;
Beware, it can throw a ClassCastException if your object isn't an Integer and a NullPointerException if your object is null.
This way you assume ...
How does TransactionScope roll back transactions?
...action (Transaction Scope) and if so enlist with it. Caution if there are more the one connection to the same SQL server this will escalate to a Distribtued Transaction.
What happens since you're using a using block you are ensuring dispose will be called even if an exception occurs. So if dispose...