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Good examples of Not a Functor/Functor/Applicative/Monad?
...ll semantics as soon as you use any unsafe function.
See the Haskell Wiki for an article on bottom (link) or unsafe functions (link).
I wonder if it is possible to create such a type constructor using a richer type system, such as Agda or Haskell with various extensions.
A type constructor which ...
Is a LINQ statement faster than a 'foreach' loop?
... because it introduces overhead. Do not use LINQ if you care much about performance. Use LINQ because you want shorter better readable and maintainable code.
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How to capture the “virtual keyboard show/hide” event in Android?
...owInsets.isVisible(WindowInsets.Type.ime())
// now use the boolean for something
}
})
You can also listen to the animation of showing/hiding the keyboard and do a corresponding transition.
I recommend reading Android 11 preview and the corresponding documentation
Before Android 11
Howev...
Get host domain from URL?
...;
Uri.GetLeftPart( UriPartial.Authority )
Defines the parts of a URI for the Uri.GetLeftPart method.
http://www.contoso.com/index.htm?date=today --> http://www.contoso.com
http://www.contoso.com/index.htm#main --> http://www.contoso.com
nntp://news.contoso.com/123456@con...
What does $$ mean in the shell?
I once read that one way to obtain a unique filename in a shell for temp files was to use a double dollar sign ( $$ ). This does produce a number that varies from time to time... but if you call it repeatedly, it returns the same number. (The solution is to just use the time.)
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sqlite database default time value 'now'
... size, note that this recipe will save your timestamps in ISO-8601 (a text format), taking up about 24 bytes in the database per date. You can save space by just using an INTEGER(4) column, and storing the unix time via "INSERT INTO test (t) values (strftime("%s", CURRENT_TIME));"
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File Upload without Form
Without using any forms whatsoever, can I just send a file/files from <input type="file"> to 'upload.php' using POST method using jQuery. The input tag is not inside any form tag. It stands individually. So I don't want to use jQuery plugins like 'ajaxForm' or 'ajaxSubmit'.
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How to render a PDF file in Android
... us just render all pages
final int pageCount = renderer.getPageCount();
for (int i = 0; i < pageCount; i++) {
Page page = renderer.openPage(i);
// say we render for showing on the screen
page.render(mBitmap, null, null, Page.RENDER_MODE_FOR_DISPLAY);
// do stuff with the ...
How to drop rows of Pandas DataFrame whose value in a certain column is NaN
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Creates Error: TypeError: ufunc 'isfinite' not supported for the input types, and the inputs could not be safely coerced to any supported types according to the casting rule ''safe''
– Philipp Schwarz
Oct 7 '16 at 13:18
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How to submit form on change of dropdown list?
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Just ask assistance of JavaScript.
<select onchange="this.form.submit()">
...
</select>
See also:
HTML dog - JavaScript tutorial
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