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Why does this CSS margin-top style not work?
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8.3.1 Collapsing margins
In CSS, the adjoining margins of two or more boxes (which might or might not be siblings) can combine to form a single margin. Margins that combine this way are said to collapse, and the resulting combined margin is called a collapsed margin.
Adjoining vertica...
Unit testing code with a file system dependency
...ests you want to test the WHAT and not the HOW.
See Black Box Testing for more.
The WHAT is the name of your method (or at least it should be). The HOW are all the little implementation details that live inside your method. Good tests allow you to swap out the HOW without breaking the WHAT.
Thin...
Git fast forward VS no fast forward merge
...ould probably get away with FF whenever it is possible. Thus you will have more svn-like feeling of workflow.
For example, the author of this article thinks that --no-ff option should be default and his reasoning is close to that I outlined above:
Consider the situation where a series of minor co...
What are invalid characters in XML
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229
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Condition within JOIN or WHERE
...f the criteria in the WHERE simply to make the lists of filtering criteria more easily maintainable.
For example, instead of:
SELECT *
FROM Customers c
INNER JOIN CustomerAccounts ca
ON ca.CustomerID = c.CustomerID
AND c.State = 'NY'
INNER JOIN Accounts a
ON ca.AccountID = a.AccountID
...
in a “using” block is a SqlConnection closed on return or exception?
...an explicitly .Commit or .Rollback transactions in the catch. This is both more readable and explicit, and permits you to commit if that makes sense given the type of the exception. (Transactions implicitly roll back on conn.Close if not committed.).
– Chris
Ma...
Quickly find whether a value is present in a C array?
...OP came out similar to what GCC generated (I renamed the labels to make it more readable):
loop_top:
ldr r3,[r1],#4
cmp r3,r2
beq true_exit
subs r0,r0,#1
bne loop_top
false_exit: xxx
bx lr
true_exit: xxx
bx lr
As I said, I don't own the OP's exact hardware, but I...
POST unchecked HTML checkboxes
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485
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Looping in a spiral
... (x,y) that are not going to be printed, but that will make the code a bit more ugly.
– ShreevatsaR
Dec 29 '08 at 19:20
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Rails respond_with: how does it work?
... a template with a name matching the action. Anything beyond that requires more instructions within the action, or a custom respond_to call with a block to handle multiple format responses.
As most controllers use a fairly common pattern of customization, responders provide an extra level of abstra...