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Why is 1/1/1970 the “epoch time”?
...ess than 829 days. For this reason, the time represented by the number 0 (called the epoch) had to be set in the very recent past. As this was in the early 1970s, the epoch was set to 1971-1-1.
Later, the system time was changed to increment every second, which increased the span of time that could...
How to convert a Map to List in Java?
...nvert a Map<key,value> to a List<value> ? Just iterate over all values and insert them in a list or am I overlooking something?
...
How to make blinking/flashing text with CSS 3
... a bit longer than the timer (and timers aren't reliable anyway) and eventually you'll likely end up with unbounded queue of animations queued up on the element. The correct approach would be to do without the timer and "recursively" call blinker as the completion callback to the .fadeIn call.
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How can I truncate a datetime in SQL Server?
...e portion of the values are gone when you cast them back to datetime. It's all just bit shifting with no complicated logic and it's very fast.
Be aware this relies on an implementation detail Microsoft is free to change at any time, even in an automatic service update. It's also not very portable....
Why does Decimal.Divide(int, int) work, but not (int / int)?
...ase-3: 0.1).
Floating-point numbers are faster to work with (in terms of CPU time; programming-wise they are equally simple) and preferred whenever you want to minimize rounding error (as in scientific applications).
shar...
Detecting when a div's height changes using jQuery
...got a div that contains some content that's being added and removed dynamically, so its height is changing often. I also have a div that is absolutely positioned directly underneath with javascript, so unless I can detect when the height of the div changes, I can't reposition the div below it.
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Parser Error Message: Could not load type 'TestMvcApplication.MvcApplication'
... +1 This was my problem too. The error message and help on this is basically non-existent. Thanks.
– Noldorin
Jan 6 '12 at 11:50
4
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Rails: How do I create a default value for attributes in Rails activerecord's model? [duplicate]
...
add_column :status, :string, :default => "P"
....
OR
You can use a callback, before_save
class Task < ActiveRecord::Base
before_save :default_values
def default_values
self.status ||= 'P' # note self.status = 'P' if self.status.nil? might be safer (per @frontendbeauty)
end
end
...
Naming conventions: “State” versus “Status” [closed]
...
It depends on the context
State generally refers to the entire state of an entity - all its values and relationships at a particular point in time (usually, current)
Status is more of a time-point, say, where something is at in a process or workflow - is it dir...
How to make a function wait until a callback has been called using node.js
...orking with event driven systems like node, your function should accept a callback parameter that will be invoked when then computation is complete. The caller should not wait for the value to be "returned" in the normal sense, but rather send the routine that will handle the resulting value:
funct...