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What's the purpose of the LEA instruction?
...trick" to do certain computations, but that's not its primary purpose. The x86 instruction set was designed to support high-level languages like Pascal and C, where arrays—especially arrays of ints or small structs—are common. Consider, for example, a struct representing (x, y) coordinates:
str...
Get Slightly Lighter and Darker Color from UIColor
...n:&g blue:&b alpha:&a])
return [UIColor colorWithRed:MAX(r - 0.2, 0.0)
green:MAX(g - 0.2, 0.0)
blue:MAX(b - 0.2, 0.0)
alpha:a];
return nil;
}
Use it like this:
UIColor *baseColor ...
Hash function that produces short hashes?
...truncate the result to the desired length, which may be good enough.
For example, in Python:
>>> import hashlib
>>> hash = hashlib.sha1("my message".encode("UTF-8")).hexdigest()
>>> hash
'104ab42f1193c336aa2cf08a2c946d5c6fd0fcdb'
>>> hash[:10]
'104ab42f11'
...
What are the differences between Chosen and Select2?
Chosen and Select2 are the two more popular libraries for extending selectboxes.
11 Answers
...
How to find all the tables in MySQL with specific column names in them?
...
@Echo - you can always play with mysqldump with --skip-extended-insert and then grep through the file... dirty but strangely satifying :)
– Ken
Oct 20 '11 at 17:35
...
How to create a Menubar application for Mac
...om/articles/mactech/Vol.22/22.02/Menulet - here's a sample code with some explanation.
– SteamTrout
Aug 5 '10 at 6:46
2
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Haskell, Lisp, and verbosity [closed]
For those of you experienced in both Haskell and some flavor of Lisp, I'm curious how "pleasant" (to use a horrid term) it is to write code in Haskell vs. Lisp.
...
Xcode 5 - “iOS Simulator failed to install application” every time I switch simulators
Using Xcode 5 GM, anytime I switch to the 5.1, 6.0 or 6.1 simulators to test, I get the error "iOS Simulator failed to install application." When I reset the simulator it works, but this is getting very tiring.
...
Determine direct shared object dependencies of a Linux binary?
How can I easily find out the direct shared object dependencies of a Linux binary in ELF format?
4 Answers
...
Java equivalents of C# String.Format() and String.Join()
...ilder();
Iterator<?> iter = s.iterator();
while (iter.hasNext()) {
builder.append(iter.next());
if (!iter.hasNext()) {
break;
}
builder.append(delimiter);
}
return builder.toString();
}
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