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With arrays, why is it the case that a[5] == 5[a]?
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@Dinah: A is an address, say 0x1230. If a was in 32-bit int array, then a[0] is at 0x1230, a[1] is at 0x1234, a[2] at 0x1238...a[5] at x1244 etc. If we just add 5 to 0x1230, we get 0x1235, which is wrong.
– James Curran
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How to round up a number to nearest 10?
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echo roundToTheNearestAnything(1234, 167).'<br>';
Will output:
1230
1235
1230
1169
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C# DateTime to “YYYYMMDDHHMMSS” format
... second
String.Format("{0:f ff fff ffff}", dt); // "1 12 123 1230" sec.fraction
String.Format("{0:F FF FFF FFFF}", dt); // "1 12 123 123" without zeroes
String.Format("{0:t tt}", dt); // "P PM" A.M. or P.M.
String.Format("{0:z zz zzz}", dt...
How to resolve “You need to have Ruby and Sass installed and in your PATH for this task to work” War
... edited Dec 2 '19 at 8:51
biruk1230
2,24444 gold badges99 silver badges2323 bronze badges
answered Dec 2 '19 at 8:29
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Hidden features of Ruby
...234567890.to_s(16)
=> "499602d2"
>> 1234567890.to_s(24)
=> "6b1230i"
>> 1234567890.to_s(36)
=> "kf12oi"
And as Huw Walters has commented, converting the other way is just as simple:
>> "kf12oi".to_i(36)
=> 1234567890
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How do you do a simple “chmod +x” from within python?
...h a leading zero as octal. Otherwise, you are passing os.chmod("somefile", 1230) indeed, which is octal of 664.
How to make --no-ri --no-rdoc the default for gem install?
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1230
You just add the following line to your local ~/.gemrc file (it is in your home folder):
gem...
List comprehension in Ruby
...0.8.7/lib/rake/rake_test_loader
Started
ListComprehensionTest#test_inject (1230 ms warmup)
wall_time: 1221 ms
memory: 0.00 KB
objects: 0
gc_runs: 0
gc_time: 0 ms
.ListComprehensionTest#test_map_compact (860 ms warmup)
wall_ti...
Javascript: formatting a rounded number to N decimals
...espace.round(1234.5678, 1); // 1234.6
myNamespace.round(1234.5678, -1); // 1230
from Mozilla Developer reference for Math.round()
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Responsive image map
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<a xlink:href="https://example.com/link2.html">
<text x="1230.7" y="952" font-size="20">Second zone</text>
<rect x="1081.7" y="507" opacity="0.2" fill="#FFFFFF" width="390.2" height="450"></rect>
</a>
</g>
</svg>
</figure>
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