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In mongoDb, how do you remove an array element by its index?
...}, {'$pull': {"interests": "guitar"}})
Also, you may consider using $pullAll for removing all occurrences. More about this on the official documentation page - http://www.mongodb.org/display/DOCS/Updating#Updating-%24pull
This doesn't use index as a criteria for removing an element, but still mig...
Android: How to stretch an image to the screen width while maintaining aspect ratio?
... always roughly square) and display it so that it fills the screen horizontally, and stretches vertically to maintain the aspect ratio of the image, on any screen size. Here is my (non-working) code. It stretches the image horizontally, but not vertically, so it is squashed...
...
Set margins in a LinearLayout programmatically
...bal utility function that converts dips to px. This is what I have done in all my apps. Android API sucks.
– mxcl
Jan 26 '12 at 12:00
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Cannot download Docker images behind a proxy
I installed Docker on my Ubuntu 13.10 (Saucy Salamander) and when I type in my console:
25 Answers
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EF Code First: How do I see 'EntityValidationErrors' property from the nuget package console?
...pper function in the Configuration class in the Seed method, and replaced calls to SaveChanges with calls to my function instead. This function would simply enumerate the errors within the EntityValidationErrors collection, and rethrow an exception where the Exception message lists the individual p...
Changing UIImage color
... answer above, but slightly shortened. This only takes the image as a mask and does not actually "multiply" or color the image.
Objective C:
UIColor *color = <# UIColor #>;
UIImage *image = <# UIImage #>;// Image to mask with
UIGraphicsBeginImageContextWithOptions(image.siz...
ImageUtil 扩展：图像工具扩展，提供图像处理和变换功能 · App Inventor 2 中文网
...u.imageutil.aix
版本：5
发布日期：2022年3月8日
最低 API：19 (Android 4.4 KitKat)
下载链接
com.gordonlu.imageutil.aix
ImageUtil.aia - 示例项目
功能概述
ImageUtil 扩展提供了一系列强大的图像处理功能，包括...
How to programmatically take a screenshot on Android?
...
Here is the code that allowed my screenshot to be stored on an SD card and used later for whatever your needs are:
First, you need to add a proper permission to save the file:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
And this is the code (running in a...
Make anchor link go some pixels above where it's linked to
... window.scrollTo(window.scrollX, window.scrollY - 100);
});
This will allow the browser to do the work of jumping to the anchor for us and then we will use that position to offset from.
EDIT 1:
As was pointed out by @erb, this only works if you are on the page while the hash is changed. Enter...
How to delete a file or folder?
...mdir() removes an empty directory.
shutil.rmtree() deletes a directory and all its contents.
Path objects from the Python 3.4+ pathlib module also expose these instance methods:
pathlib.Path.unlink() removes a file or symbolic link.
pathlib.Path.rmdir() removes an empty directory.
...