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What do all of Scala's symbolic operators mean?
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530
I divide the operators, for the purpose of teaching, into four categories:
Keywords/reserved s...
What is the difference between Gemfile and Gemfile.lock in Ruby on Rails
I am a beginner to Ruby on Rails and I am using Rails 3.0.9.
3 Answers
3
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Why does the C++ map type argument require an empty constructor when using []?
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edited Jul 8 '16 at 0:30
answered Mar 30 '09 at 0:01
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Difference between pre-increment and post-increment in a loop?
..., returns the new value.
C#:
string[] items = {"a","b","c","d"};
int i = 0;
foreach (string item in items)
{
Console.WriteLine(++i);
}
Console.WriteLine("");
i = 0;
foreach (string item in items)
{
Console.WriteLine(i++);
}
Output:
1
2
3
4
0
1
2
3
foreach and while loops depend on w...
Converting an integer to a hexadecimal string in Ruby
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You can give to_s a base other than 10:
10.to_s(16) #=> "a"
Note that in ruby 2.4 FixNum and BigNum were unified in the Integer class.
If you are using an older ruby check the documentation of FixNum#to_s and BigNum#to_s
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Adding rounded corner and drop shadow to UICollectionViewCell
...'s layer to achieve both results.
cell.contentView.layer.cornerRadius = 2.0f;
cell.contentView.layer.borderWidth = 1.0f;
cell.contentView.layer.borderColor = [UIColor clearColor].CGColor;
cell.contentView.layer.masksToBounds = YES;
cell.layer.shadowColor = [UIColor blackColor].CGColor;
cell.layer....
How to deny access to a file in .htaccess
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answered Jul 30 '12 at 21:18
Jon LinJon Lin
133k2626 gold badges191191 silver badges204204 bronze badges
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How to fix error with xml2-config not found when installing PHP from sources?
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edited Nov 20 '14 at 17:42
radtek
23.5k88 gold badges121121 silver badges9191 bronze badges
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Average of 3 long integers
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edited May 23 '17 at 12:02
Community♦
111 silver badge
answered May 30 '14 at 8:05
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Set transparent background using ImageMagick and commandline prompt
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140
I am using ImageMagick 6.6.9-7 on Ubuntu 12.04.
What worked for me was the following:
convert t...