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What is the purpose of python's inner classes?
... methods of the outer class — they will see the outer's self without any extra work required (just use a different identifier where you would typically put the inner's self; like innerself), and will be able to access the outer instance via that.
– Evgeni Sergeev
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Explain how finding cycle start node in cycle linked list work?
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Distance run by slow: x + y
Distance run by fast: x + m(y + z) + y i.e. extra y where they meet
Since fast runs with twice the speed of slow, and that they have been running for same time, it implies that if we double the distance ran by slow, we get the distance ran by fast. Thus,
2(x + y) =...
Ensuring json keys are lowercase in .NET
...wercaseContractResolver : DefaultContractResolver
{
protected override string ResolvePropertyName(string propertyName)
{
return propertyName.ToLower();
}
}
Usage:
var settings = new JsonSerializerSettings();
settings.ContractResolver = new LowercaseContractResolver();
var json...
PHP parse/syntax errors; and how to solve them
...al syntax error message reads:
Parse error: syntax error, unexpected T_STRING, expecting ';' in file.php on line 217
Which lists the possible location of a syntax mistake. See the mentioned file name and line number.
A moniker such as T_STRING explains which symbol the parser/tokenizer couldn...
How can I check if a background image is loaded?
...s are stored. If you're referring to cache, remember that you're adding an extra HTTP request and all clients might not have cache enabled.
– HyderA
Feb 20 '11 at 17:09
7
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Array.size() vs Array.length
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Is there something that does work with Strings if size doesn't work?
– Chris
Apr 17 '17 at 14:42
2
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What are the Ruby Gotchas a newbie should be warned about? [closed]
...onvention — for example, regular-expression searches — return numbers, strings, lists, or other non-false values on success, but nil on failure (e.g., mismatch). This convention is also used in Smalltalk, where only the special objects true and false can be used in a boolean expression.
Versions...
About Android image and asset sizes
...i (240 dpi, High density screen) - 72px x 72px (0.38) (2)
xhdpi (320 dpi, Extra-high density screen) - 96px x 96px (0.5) (2.67)
xxhdpi (480 dpi, Extra-extra-high density screen) - 144px x 144px (0.75) (4)
xxxhdpi (640 dpi, Extra-extra-extra-high density screen) - 192px x 192px (1.0) (5.33)
My sh...
Ukkonen's suffix tree algorithm in plain English
...ical symbology. The closest to a good explanation that I've found is Fast String Searching With Suffix Trees , but he glosses over various points and some aspects of the algorithm remain unclear.
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Why does installing Nokogiri on Mac OS fail with libiconv is missing?
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why do I need the extra "--" in the middle of the gem install command?
– Rembrandt Q. Einstein
Feb 12 '15 at 19:19
3
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