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What is the formal difference in Scala between braces and parentheses, and when should they be used?
..., 3}.reduceLeft(_ + _) // invalid, A* vararg parameter
However, there’s more you need to know to better grasp these rules.
Increased compile checking with parens
The authors of Spray recommend round parens because they give increased compile checking. This is especially important for DSLs like S...
How do I pass JavaScript variables to PHP?
...t;'; //between <option></option> tags you can output something more human-friendly (like $row['name'], if table "salaried" have one)
}
?>
</select>
<?php endif ?>
</p>
<p>
<input type="submit" value="...
Convert string in base64 to image and save on filesystem in Python
...geToSave.png", "wb")
fh.write(img_data.decode('base64'))
fh.close()
# or, more concisely using with statement
with open("imageToSave.png", "wb") as fh:
fh.write(img_data.decode('base64'))
Modernizing this example to Python 3, which removed arbitrary codec support from string/bytes .encode() a...
Why does sizeof(x++) not increment x?
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Differences in auto-unboxing between Java 6 vs Java 7
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You are right; to put it more simply:
Object o = new Integer(1234);
int x = (int) o;
This works in Java 7, but gives a compilation error in Java 6 and below. Strangely, this feature is not prominently documented; for example, it's not mentioned he...
What are the correct version numbers for C#?
...features: late binding (dynamic), delegate and interface generic variance, more COM support, named arguments, tuple data type and optional parameters
C# 5.0 released with .NET 4.5 and VS2012 (August 2012). Major features: async programming, caller info attributes. Breaking change: loop variable clos...
How does Amazon RDS backup/snapshot actually work?
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Amazon shares more details in their outage post mortem here aws.amazon.com/message/65648
– Joshua
Apr 29 '11 at 19:32
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Loading/Downloading image from URL on Swift
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Wolfram's Rule 34 in XKCD [closed]
...ind of operations you perform. If you studied some assembly this will make more sense.
The most elementary computation is when 2 bits of data get compared to yield a third. These are called boolean operations. There are 8 possible:
0;0 -> 0
0;0 -> 1
0;1 -> 0
0;1 -> 1
1;0 -> 0
1;0 -&...