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Simple argparse example wanted: 1 argument, 3 results
... you want it to be, whatever 'a' represents. If you expect one argument, a file name for example, it is what was entered as the file name on the command line. You could then do your own processing to determine whether it exists in the filesystem, but that is another Q&A.
– ...
How to pass the values from one activity to previous activity
...a stored in the object.
After a serialized object has been written into a file, it can be read from the file and deserialized that is, the type information and bytes that represent the object and its data can be used to recreate the object in memory.
If you want tutorial for this refer this link
...
while (1) vs. while(True) — Why is there a difference (in python 2 bytecode)?
...ght", "credits" or "license" for more information.
>>> True = 4
File "<stdin>", line 1
SyntaxError: assignment to keyword
thus the interpreter can replace the while True: loop with an infinite loop.
share
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How do I parse JSON with Objective-C?
...防止乱码，
NSString* jsonString = [[NSString alloc] initWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil];
//将字符串写到缓冲区。
NSData* jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
NSError *jsonError;
id allKeys = [NSJSONSerialization JSONObjectWi...
What is JSONP, and why was it created?
...quest we have to use script HTML tags, the ones you usually use to load js files, in order for js to get data from another domain. Sounds weird?
Thing is - turns out script tags can be used in a fashion similar to XMLHttpRequest! Check this out:
script = document.createElement('script');
script.ty...
How to delete images from a private docker registry?
...service: registry
storage:
cache:
blobdescriptor: inmemory
filesystem:
rootdirectory: /var/lib/registry
delete:
enabled: true
http:
addr: :5000
headers:
X-Content-Type-Options: [nosniff]
health:
storagedriver:
enabled: true
interval: 10s
...
When should I use std::thread::detach?
...had crashed or had been killed. Hopefully the OS will release the locks on files, etc... but you could have corrupted shared memory, half-written files, and the like.
So, should you use join or detach ?
Use join
Unless you need to have more flexibility AND are willing to provide a synchronizati...
Is it possible to rotate a drawable in the xml description?
...ould be avoided, I'd rather deal with the overhead of updating a couple of files than having transformations on one):
Note: Android Studio is a great source for vector assets.
res\values\styles.xml
<!--ImageView-->
<style name="Details_Buttons_Top_Left_Button">
<item name="androi...
What's the difference between streams and datagrams in network programming?
...a stream socket when having information in order and intact is important. File transfer protocols are a good example here. You don't want to download some file with its contents randomly shuffled around and damaged!
You'd use a datagram socket when order is less important than timely delivery (th...
How do you create an asynchronous method in C#?
...ple of an asynchronous I/O call. Let’s say a request needs to write to a file. The request thread calls the asynchronous write method. WriteAsync is implemented by the Base Class Library (BCL), and uses completion ports for its asynchronous I/O. So, the WriteAsync call is passed down to the OS as ...