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Creating Multifield Indexes in Mongoose / MongoDB
...xes in Mongoosejs. In particular I have two fields that need to be indexed and unique. What is an example mongoose schema that indexes two fields together?
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Convert an image to grayscale in HTML/CSS
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Support for CSS filters has landed in Webkit. So we now have a cross-browser solution.
img {
filter: gray; /* IE6-9 */
-webkit-filter: grayscale(1); /* Google Chrome, Safari 6+ & Opera 15+ */
filter: grayscale(1); /* Microsoft Edge and...
What is the purpose of Node.js module.exports and how do you use it?
What is the purpose of Node.js module.exports and how do you use it?
12 Answers
12
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Function return value in PowerShell
...ere are two main ideas to wrap your head around:
All output is captured, and returned
The return keyword really just indicates a logical exit point
Thus, the following two script blocks will do effectively the exact same thing:
$a = "Hello, World"
return $a
$a = "Hello, World"
$a
return
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How do I wrap a selection with an HTML tag in Visual Studio?
...is available in Visual Studio 2017 as well, but you must have the "ASP.NET and Web Development" workload installed.
Example
Shift+Alt+W > p > Enter
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Styling text input caret
...e caret of a focused <input type='text'/> . Specifically, the color and thickness.
5 Answers
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C++ : why bool is 8 bits long?
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Yes, it's a hardware choice, and if the hardware allows for it, the size of a bool could change. But the OP asked why a bool is 8 bits wide, and on systems where that is the case, it is generally because the CPU is only able to address 8-bit bytes.
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Which comment style should I use in batch files?
I've been writing some batch files, and I ran into this user guide , which has been quite informative. One thing it showed me was that lines can be commented not just with REM , but also with :: . It says:
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How to get visitor's location (i.e. country) using geolocation? [duplicate]
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@juanpastas you don't. you just ping a service, and service will know. or you write service yourself, but that's out of pure javascript scope.
– tishma
Nov 7 '14 at 22:56
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Why Android Studio says “Waiting For Debugger” if am NOT debugging?
I am working with Android Studio. Since last night, when I Run my project on my device, appear the message "Waiting For Debugger". It is a very strange behavior because I am not debugging application.
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