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MongoDB Aggregation: How to get total records count?
I have used aggregation for fetching records from mongodb.
13 Answers
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What can you do in MSIL that you cannot do in C# or VB.NET? [closed]
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MSIL allows for overloads which differ only in return types because of
call void [mscorlib]System.Console::Write(string)
or
callvirt int32 ...
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Parse config files, environment, and command-line arguments, to get a single collection of options
Python's standard library has modules for configuration file parsing ( configparser ), environment variable reading ( os.environ ), and command-line argument parsing ( argparse ). I want to write a program that does all those, and also:
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How to link to apps on the app store
...a store that allows the
user to purchase other media from the App Store. For example, your app
might display the store to allow the user to purchase another app.
From News and Announcement For Apple Developers.
Drive Customers Directly to Your App
on the App Store with iTunes Links
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Regex not operator
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No, there's no direct not operator. At least not the way you hope for.
You can use a zero-width negative lookahead, however:
\((?!2001)[0-9a-zA-z _\.\-:]*\)
The (?!...) part means "only match if the text following (hence: lookahead) this doesn't (hence: negative) match this. But it does...
How do I add a placeholder on a CharField in Django?
Take this very simple form for example:
8 Answers
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Implicit “Submit” after hitting Done on the keyboard at the last EditText
...ername, then go to my password, if I hit "Done" on the keyboard, the login form is automatically submitted, without me having to click the submit button. How is this done?
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How to import a module given its name as string?
I'm writing a Python application that takes as a command as an argument, for example:
11 Answers
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How to create a GUID/UUID using iOS
...entifier] is now deprecated and apps are being rejected from the App Store for using it. The method below is now the preferred approach.
If you need to create several UUID, just use this method (with ARC):
+ (NSString *)GetUUID
{
CFUUIDRef theUUID = CFUUIDCreate(NULL);
CFStringRef string = CF...
Multiprocessing vs Threading Python [duplicate]
... same memory at the same time. This is what the global interpreter lock is for.
Spawning processes is a bit slower than spawning threads.
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