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Custom dealloc and ARC (Objective-C)
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[observer unregisterObject:self];
// [super dealloc]; //(provided by the compiler)
}
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Vagrant reverse port forwarding?
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In the book Vagrant: Up and Running (Pub. date: June 12, 2013), written by the creator of Vagrant, he mentioned that it is not possible for guest machine to access services running on the host machine.
Instead of using Forwarded Ports, you could set up a private network using Host-Only Networks...
Python: json.loads returns items prefixing with 'u'
... you really use the string, it won't appear in your data. Don't be thrown by the printed output.
For example, try this:
print mail_accounts[0]["i"]
You won't see a u.
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Carriage Return/Line Feed in .Net Resource File (App_GlobalResources)
... name of the resource and string content) put the string content separated by Shift+Enter.
Lets say you want to type in
hello
world
Type "hello" followed by Shift+Enter and "world".
If you look at the Resources.Resx file (which is an xml file), you can see that it creates a node with the a...
What is database pooling?
...g is a method used to keep database connections open so they can be reused by others.
Typically, opening a database connection is an expensive operation, especially if the database is remote. You have to open up network sessions, authenticate, have authorisation checked, and so on. Pooling keeps th...
how to use adb command to push a file on device without sd card
...droid/sdk/platform-tools)
To check the SDCards(External and Internal) installed on your device fire these commands :
1) ./adb shell (hit return/enter)
2) cd -(hit return/enter)
now you will see the list of Directories and files from your android device
there you may find /sdcard as well as /sto...
Checking if a string is empty or null in Java [duplicate]
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@HonzaKalfus "Calling isEmpty() returns true for string containing whitespace character" - That is not true! " ".isEmpty() returns false
– MestreLion
Sep 1 '17 at 1:59
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Selecting last element in JavaScript array [duplicate]
...ength - 1];
};
};
will allow you to get the last element of an array by invoking array's last() method, in your case eg.:
loc['f096012e-2497-485d-8adb-7ec0b9352c52'].last();
You can check that it works here: http://jsfiddle.net/D4NRN/
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What's the optimum way of storing an NSDate in NSUserDefaults?
...DateKey"] and be done with it. NSDate is one of the "main types" supported by the PLIST format (dates, numbers, strings, data, dictionaries, and arrays), so you can just store it directly.
See the documentation for proof.
Just store and retrieve the date directly and watch it Do The Right Thing (i...
ImportError: No module named requests
...quests is not a built in module (does not come with the default python installation), so you will have to install it:
OSX/Linux
Use $ sudo pip install requests (or pip3 install requests for python3) if you have pip installed. If pip is installed but not in your path you can use python -m pip ins...