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Programmatically obtain the Android API level of a device?
...
What you need: http://developer.android.com/reference/android/os/Build.VERSION_CODES.html
SDK_INT value Build.VERSION_CODES Human Version Name
1 BASE Android 1.0 (no codename)
2 BASE_1_1 ...
Objective-C : BOOL vs bool
...
From the definition in objc.h:
#if (TARGET_OS_IPHONE && __LP64__) || TARGET_OS_WATCH
typedef bool BOOL;
#else
typedef signed char BOOL;
// BOOL is explicitly signed so @encode(BOOL) == "c" rather than "C"
// even if -funsigned-char is used.
#endif
#define...
How to create Drawable from resource
...21+
Code would look something like this.
Drawable myDrawable;
if(android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP){
myDrawable = context.getResources().getDrawable(id, context.getTheme());
} else {
myDrawable = context.getResources().getDrawable(id);
}
...
Programmatically saving image to Django ImageField
... is a URL to an image
# self.photo is the ImageField
self.photo.save(
os.path.basename(self.url),
File(open(result[0], 'rb'))
)
self.save()
That's a bit confusing because it's pulled out of my model and a bit out of context, but the important parts are:
The image pulled from the we...
Django FileField with upload_to determined at runtime
...uploads so that if user joe uploads a file it goes to MEDIA_ROOT/joe as opposed to having everyone's files go to MEDIA_ROOT. The problem is I don't know how to define this in the model. Here is how it currently looks:
...
Docker can't connect to docker daemon
...
Linux
The Post-installation steps for Linux documentation reveals the following steps:
Create the docker group.
sudo groupadd docker
Add the user to the docker group.
sudo usermod -aG docker $(whoami)
Log out and log back in to ensure...
How to remove unused C/C++ symbols with GCC and ld?
...ou could omit the unused one with the following command to gcc(g++):
gcc -Os -fdata-sections -ffunction-sections test.cpp -o test -Wl,--gc-sections
(Note that -Os is an additional compiler flag that tells GCC to optimize for size)
...
How to copy to clipboard in Vim?
Is it possible to copy to clipboard directly from Vim? yy only copies stuff to Vim's internal buffer. I want to copy to the OS's clipboard. Is there any such command in Vim or you can only yank stuff within Vim?
...
How can I change the color of my prompt in zsh (different from normal text)?
...s it in some other zsh initialization file. You should still include it in scripts you intend to share with others.
– kindall
Aug 19 '19 at 22:33
...
JavaScript: What are .extend and .prototype used for?
..., Math, and even your own custom ones.
Date.prototype.lol = function() {
alert('hi');
};
( new Date ).lol() // alert message
In the snippet above, I define a method for all Date objects ( already existing ones and all new ones ).
extend is usually a high level function that copies the prototy...