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Name node is in safe mode. Not able to leave
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213
In order to forcefully let the namenode leave safemode, following command should be executed:
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Run a single migration file
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244
You can just run the code directly out of the ruby file:
rails console
>> require "db/m...
What are the most common non-BMP Unicode characters in actual use? [closed]
... the most common non-BMP characters by far. ????, otherwise known as U+1F602 FACE WITH TEARS OF JOY, is the most common one on Twitter's public stream. It occurs more frequently than the tilde!
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Using wget to recursively fetch a directory with arbitrary files in it
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edited Oct 4 '17 at 21:53
waldyrious
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answe...
How do you switch pages in Xamarin.Forms?
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answered Aug 6 '14 at 18:24
Stephane DelcroixStephane Delcroix
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Remove empty strings from a list of strings
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12 Answers
12
Active
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How can I pass command-line arguments to a Perl program?
...om GetOpt::Long:
use Getopt::Long;
my $data = "file.dat";
my $length = 24;
my $verbose;
$result = GetOptions ("length=i" => \$length, # numeric
"file=s" => \$data, # string
"verbose" => \$verbose); # flag
Alternatively, @ARGV is a sp...
Can I replace groups in Java regex?
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126
Use $n (where n is a digit) to refer to captured subsequences in replaceFirst(...). I'm assumin...
Is it possible to implement a Python for range loop without an iterator variable?
...ast result that returned in an interactive python session:
>>> 1+2
3
>>> _
3
For this reason, I would not use it in this manner. I am unaware of any idiom as mentioned by Ryan. It can mess up your interpreter.
>>> for _ in xrange(10): pass
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>>> _
9
>>...
Is there a shortcut to make a block comment in Xcode?
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237
Try command + /. It works for me.
So, you just highlight the block of code you want to comme...