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Regex - Should hyphens be escaped? [duplicate]
...er in the range (e.g. [-a-z] or [0-9-]), OR escape it (e.g. [a-z\-0-9]) in order to add "hyphen" to your class.
It's more common to find a hyphen placed first or last within a character class, but by no means will you be lynched by hordes of furious neckbeards for choosing to escape it instead.
(A...
Converting newline formatting from Mac to Windows
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"hints.macworld.com/article.php?story=20031018164326986" also has a good write-up on how to use the tr command to perform various conversions. Use hexdump or similar to find out exactly what sort of end-of-line convention is now used in the file.
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Why can I throw null in Java? [duplicate]
...llPointerException and not a FileNotFoundException
– php_coder_3809625
Aug 24 '16 at 5:50
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“elseif” syntax in JavaScript
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@JayK: Haha.. PHP has elseif, perl has elsif (I think), and Python has elif.. that kind of annoyed me at first, but... I guess it's kind of cute. It does serve a slight purpose in Python and PHP though, because it wouldn't work with their ...
What is the difference between native code, machine code and assembly code?
...ictly speaking, most dynamically-typed languages — such as Perl, Python, PHP and Ruby — are also managed code. However, they are not commonly described as such, which shows that managed code is actually somewhat of a marketing term for the really big, serious, commercial programming environments...
How do you use the ellipsis slicing syntax in Python?
... a = arange(16).reshape(2,2,2,2)
Now, you have a 4-dimensional matrix of order 2x2x2x2. To select all first elements in the 4th dimension, you can use the ellipsis notation
>>> a[..., 0].flatten()
array([ 0, 2, 4, 6, 8, 10, 12, 14])
which is equivalent to
>>> a[:,:,:,0].f...
得合伙人者得天下：腾讯五虎、新东方三驾马车、携程四君子、复旦五虎 - 资...
...不记仇，相对在外面萍水相逢的，遇到争执的话很容易出问题。”
新东方三驾马车：真实版“中国合伙人”
学校：北京大学
创业者：俞敏洪、徐小平、王强
新东方昔日“三驾马车”中，俞敏洪和王强1980年一同考进北京大...
How do I get the type of a variable?
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I totally disagree. Java, C#, PHP, Perl, Python and so on were designed in C and C++ and they are not caterpillars. (When you create an database application to open variable tables from 'unknown' databases you need to control field type to variable scheme...
Swift - Convert to absolute value
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With Swift 5, you may use one of the two following ways in order to convert an integer to its absolute value.
#1. Get absolute value of an Int from magnitude property
Int has a magnitude property. magnitude has the following declaration:
var magnitude: UInt { get }
For any ...
Inversion of Control vs Dependency Injection
...constructors/setters/service lookups, which the object will 'depend' on in order to behave correctly.
IoC without using DI, for example would be the Template pattern because the implementation can only be changed through sub-classing.
DI Frameworks are designed to make use of DI and can define int...