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How to check if an array field contains a unique value or another array in MongoDB?
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Is there any INDEXING we can do on array's to stop duplicate? If yes, please guide how.
– Hitesh Joshi
Sep 29 '12 at 8:56
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RuntimeWarning: invalid value encountered in divide
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Python indexing starts at 0 (rather than 1), so your assignment "r[1,:] = r0" defines the second (i.e. index 1) element of r and leaves the first (index 0) element as a pair of zeros. The first value of i in your for loop is 0, so r...
How to modify a specified commit?
...t into the stage. Now pick and commit any files as you wish. This flow is quite well explained in "git-rebase" man page. See section "Splitting commits". bit.ly/d50w1M
– Diego Pino
Mar 15 '10 at 19:18
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TypeScript typed array usage
...typing the expression new Thing[100] as an array. It should be an error to index Thing, a constructor function, using the index operator. In C# this would allocate an array of 100 elements. In JavaScript this calls the value at index 100 of Thing as if was a constructor. Since that values is undefin...
Watermark / hint text / placeholder TextBox
...f="ContainerVisual"/>.
/// </summary>
/// <param name="index">A 32-bit signed integer that represents the index value of the child <see cref="Visual"/>. The value of index must be between 0 and <see cref="VisualChildrenCount"/> - 1.</param>
/// <return...
Check if an apt-get package is installed and then install it if it's not on Linux
... was installed, type:
dpkg -s <packagename>
You can also use dpkg-query that has a neater output for your purpose, and accepts wild cards, too.
dpkg-query -l <packagename>
To find what package owns the command, try:
dpkg -S `which <command>`
For further details, see articl...
How can I automate the “generate scripts” task in SQL Server Management Studio 2008?
... 2012? I'd just be happy if the wizard remembered my settings like "Script Indexes".
– PeterX
Mar 6 '14 at 7:06
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jQuery vs document.querySelectorAll
I heard several times that jQuery's strongest asset is the way it queries and manipulates elements in the DOM: you can use CSS queries to create complex queries that would be very hard to do in regular javascript .
However , as far as I know, you can achieve the same result with document.querySele...
How to detect the device orientation using CSS media queries?
...screen and (orientation:landscape) { … }
The CSS definition of a media query is at http://www.w3.org/TR/css3-mediaqueries/#orientation
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Splitting on first occurrence
... Technically assumes the correct delimiter. The 'first' is the [1] index. The one we are all referencing would of course be the zero-ith index. :D Semantics.
– Izaac Corbett
Nov 15 '17 at 13:19
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