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What programming practice that you once liked have you since changed your mind about? [closed]
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Comments should be used to describe why the code does what it does (if it's not obvious), not what the code does. A possible exception is a crazy bit twiddling / language hack, like Carmack's magic number 0x5f3759df.
– Chris Simmons
Jul 7 '...
What's the difference between an inverted index and a plain old index?
...cover here. Otherwise the two types are identical, it's just a question of what information you have, and as a result what information you're trying to find.
To address your inquiry, I don't think there's actually a way to know why the use is what it is today. The only reason it's important to defi...
In Ruby on Rails, what's the difference between DateTime, Timestamp, Time and Date?
...mats in ActiveRecord has little to do with Rails and everything to do with whatever database you're using.
Using MySQL as an example (if for no other reason because it's most popular), you have DATE, DATETIME, TIME and TIMESTAMP column data types; just as you have CHAR, VARCHAR, FLOAT and INTEGER.
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Suggestions for debugging print stylesheets?
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Thanks, that's what I was looking for, couldn't find it :/ The shortcut doesn't work anymore though. I just do F12 + gear icon in the bottom right corner, then the setting is under the Overrides tab,
– Aurelien
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List the queries running on SQL Server
...ly when OPENQUERY or linked servers are being used. It can be hard to tell what is the parent query just from sp_who.
– Nathan
Dec 22 '10 at 3:04
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What is the size of column of int(11) in mysql in bytes?
What is the size of column of int(11) in mysql in bytes?
11 Answers
11
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Is there a method to generate a UUID with go language
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u[8] = (u[8] | 0x80) & 0xBF // what's the purpose ?
u[6] = (u[6] | 0x40) & 0x4F // what's the purpose ?
These lines clamp the values of byte 6 and 8 to a specific range. rand.Read returns random bytes in the range 0-255, which are not all valid value...
How to revert uncommitted changes including files and folders?
...es that will be reverted without actually making any action, just to check what will happen, with:
git checkout --
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UIView frame, bounds and center
...e change happens around the center of the view. Use the code below and see what happens:
NSLog(@"Old Frame %@", NSStringFromCGRect(view2.frame));
NSLog(@"Old Center %@", NSStringFromCGPoint(view2.center));
CGRect frame = view2.bounds;
frame.size.height += 20.0f;
frame.size.width += 20.0f;
view...
How does the bitwise complement operator (~ tilde) work?
...wo again:
0000 0010
Simply flip all the bits and we get:
1111 1101
Well, what's -3 look like in two's complement? Start with positive 3: 0000 0011, flip all the bits to 1111 1100, and add one to become negative value (-3), 1111 1101.
So if you simply invert the bits in 2, you get the two's complem...