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Difference between this and self in JavaScript
...ll({}); // true false false
You can find window.self defined in the W3C 2006 working draft for the Window Object here.
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What's the best way of structuring data on firebase?
...No biggie if none of those things number in thousands. But a big deal for 10k users with upwards of 5k messages each.
So now the optimal strategy for a hierarchical, real-time structure becomes more obvious:
/user_meta/uid/email
/messages/uid/...
/widgets/uid/...
An additional tool which is extr...
Twitter Bootstrap - how to center elements horizontally or vertically
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Update: while this answer was likely correct back in early 2013, it should not be used anymore. The proper solution uses offsets.
As for other users suggestion there are also native bootstrap classes available like:
class="text-center"
class="pagination-centered"
thanks to @Henn...
Test if remote TCP port is open from a shell script
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460
As pointed by B. Rhodes, nc (netcat) will do the job. A more compact way to use it:
nc -z <ho...
What guarantees are there on the run-time complexity (Big-O) of LINQ methods?
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answered May 9 '10 at 23:16
AaronaughtAaronaught
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Why was the arguments.callee.caller property deprecated in JavaScript?
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edited May 1 '14 at 19:10
Pacerier
71.8k7979 gold badges314314 silver badges582582 bronze badges
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Difference between Observer, Pub/Sub, and Data Binding
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+50
Here's my take on the three:
Data Binding
Essentially, at the core this just means "the value of property X on object Y is semantica...
What do
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edited Aug 8 '10 at 9:43
answered Aug 6 '10 at 20:57
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How to keep one variable constant with other one changing with row in excel
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Use this form:
=(B0+4)/$A$0
The $ tells excel not to adjust that address while pasting the formula into new cells.
Since you are dragging across rows, you really only need to freeze the row part:
=(B0+4)/A$0
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What is a tracking branch?
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edited May 8 at 19:50
community wiki
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