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What's the correct way to communicate between controllers in AngularJS?
...rootScope.$on. The former can cause serious performance problems as raised by @numan. That is because the event will bubble down through all scopes.
However, the latter (using $rootScope.$emit + $rootScope.$on) does not suffer from this and can therefore be used as a fast communication channel!
F...
Or versus OrElse
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OrElse is a short-circuiting operator, Or is not.
By the definition of the boolean 'or' operator, if the first term is True then the whole is definitely true - so we don't need to evaluate the second term.
OrElse knows this, so doesn't try and evaluate temp = 0 once it's es...
What is the difference between and ?
...thematic grouping of content. Each section should be identified, typically by including a heading (h1-h6 element) as a child of the <section> element.
Examples of sections would be chapters, the various tabbed pages in a tabbed dialog box, or the numbered sections of a thesis. A Web site’s h...
npm: disable postinstall script for package
... @BrianNeisler yer very welcome, always feels good to help other people. By the way, I think double brackets [[ ]] might be better than single brackets for most use cases, not sure tho.
– Alexander Mills
Dec 1 '18 at 1:56
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Haskell composition (.) vs F#'s pipe forward operator (|>)
...reason that (|>) not used in Haskell is that its place is already taken by ($).
Also, speaking from a bit of F# experience, I think (|>) is so popular in F# code because it resembles the Subject.Verb(Object) structure of OO. Since F# is aiming for a smooth functional/OO integration, Subject |...
How to get the PATH environment-variable separator in Python?
... If, like me, you didn't read the body of this question and just went by the title, you'll think this is the character that separates elements of a filesystem path (forward slash on Linux and MacOSX, backslash on Windows). It's not, it the character that separates elements of a shell PATH that...
SQLite Reset Primary Key Field
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You can reset by update sequence after deleted rows in your-table
UPDATE SQLITE_SEQUENCE SET SEQ=0 WHERE NAME='table_name';
share
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imp...
How do I check the operating system in Python?
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You can get a pretty coarse idea of the OS you're using by checking sys.platform.
Once you have that information you can use it to determine if calling something like os.uname() is appropriate to gather more specific information. You could also use something like Python System I...
How do I speed up the scroll speed in a JScrollPane when using the mouse wheel?
...irement is to scroll a page at a time or 5 rows at a time you cant to that by just manipulating the unit value. Also the default row height may be different for each LAF. By manipulating the scroll amount on a relative basis you have better cross platform support.
– camickr
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Why is the use of alloca() not considered good practice?
...it (alloca'ing huge values), it's fine. Once you go past the "few hundred bytes" mark, it's time to use malloc and friends, instead. You may still get allocation failures, but at least you'll have some indication of the failure instead of just blowing out the stack.
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