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Proper use of beginBackgroundTaskWithExpirationHandler
... to start the network operation. If you just want an existing operation to complete, as per @Eyal's question, you don't need to do anything in applicationDidEnterBackground
– Ashley Mills
Aug 3 '12 at 20:03
...
Is there a typical state machine implementation pattern?
...ended to support multiple state machines, etc. Transition actions can be accommodated as well:
typedef void transition_func_t( instance_data_t *data );
void do_initial_to_foo( instance_data_t *data );
void do_foo_to_bar( instance_data_t *data );
void do_bar_to_initial( instance_data_t *data );
voi...
Navigation in django
... I like this idea a lot, especially for flexibility, but it comes with the less-DRY trade-off. I did start using this in a site though.
– anonymous coward
Sep 22 '09 at 14:47
...
数据存储组件 · App Inventor 2 中文网
...lick() {
var ts = Clock1.SystemTime()
Web1.Url = join("https://example.com/api?appid=10086&ts=", ts, "&sign=",
upcase(Crypto1.HmacSHA256(join("appid=10086&ts=", ts), "my-secret")))
Web1.Get()
}
AES 加密保存，读取时解密（密钥 16 个字符、IV 16 个字符，即 AES-128-CBC...
Where to find extensions installed folder for Google Chrome on Mac?
...
The default locations of Chrome's profile directory are defined at http://www.chromium.org/user-experience/user-data-directory. For Chrome on Mac, it's
~/Library/Application\ Support/Google/Chrome/Default
The actual location can be different, by setting the --user-data-dir=path/to/directo...
Removing transforms in SVG files
...
Load your SVG in Method Draw http://editor.method.ac (File > Open Image)
Ungroup your elements (Object > Ungroup elements) you might have to do this more than once.
Select your path
Reorient the path (Object > Reorient Paths).
Save your image (F...
Best way to replace multiple characters in a string?
... text = text.replace(ch,"\\"+ch)
import re
def c(text):
rx = re.compile('([&#])')
text = rx.sub(r'\\\1', text)
RX = re.compile('([&#])')
def d(text):
text = RX.sub(r'\\\1', text)
def mk_esc(esc_chars):
return lambda s: ''.join(['\\' + c if c in esc_chars else c for...
Is it possible to await an event instead of another async method?
...ro app, there's a button which kicks off a long-running process. So, as recommended, I'm using async/await to make sure the UI thread doesn't get blocked:
...
How to check if an object is a generator object in python?
...
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binning data in python with scipy/numpy
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...