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What is the !! (not not) operator in JavaScript?
... Partial Obscurity:
val.enabled = (userId != 0) ? true : false;
// And finally, much easier to understand:
val.enabled = (userId != 0);
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C#: Looping through lines of multiline string
...; new StringReader(text)))
{
Console.WriteLine(line);
}
Looping over all the lines in a body of string data (whether that's a file or whatever) is so common that it shouldn't require the calling code to be testing for null etc :) Having said that, if you do want to do a manual loop, this is th...
How to add ID property to Html.BeginForm() in asp.net mvc?
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Where does one find the API or documentation for all of the html helpers? For example where do find out what the parameters stand for?
– Zapnologica
Jul 14 '13 at 9:59
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HTML File Selection Event
... That works fine but be aware of weird IE <11 behavior. It doesn't allow you to change input's value, so most likely you will need a workaround. stackoverflow.com/questions/9011644/…
– Oleksandr Tkalenko
Mar 13 '16 at 21:53
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compilation warning: no rule to process file for architecture i386
...ject, and check that this file is not present in the tab Build Phases. Normally no header files should stay here. Clean and build it again, it should work!
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Get file size, image width and height before upload
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when the value of i is alerted in the callback function reader.onload it shows a random increment! e.g. for 4 files the value as alerted was 0 3 2 1 . Can any one explain that?
– freerunner
Mar 2 '14 at 11:16
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Programmatically creating Markdown tables in R with KnitR
...rmat argument, since knitr is aware of the output format and will automatically set it
– Yihui Xie
Nov 12 '13 at 6:20
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When is SQLiteOpenHelper onCreate() / onUpgrade() run?
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SQLiteOpenHelper onCreate() and onUpgrade() callbacks are invoked when the database is actually opened, for example by a call to getWritableDatabase(). The database is not opened when the database helper object itself is created.
SQLiteOpenHelper versions the database ...
What does set -e mean in a bash script?
...shell functions, so if you have functions, set -o errtrace or set -E will allow you to just set the trap once and apply it globally.
– ykay
Jul 17 '15 at 18:21
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How do I create a directory from within Emacs?
...-directory RET RET
Emacs asks to create the parent directories automatically while saving a new file in recent Emacs versions. For older version, see How to make Emacs create intermediate dirs - when saving a file?
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