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Positioning MKMapView to show multiple annotations at once
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Checking if an instance's class implements an interface?
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edited May 14 '17 at 11:33
Tomáš Votruba
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Total memory used by Python process?
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answered Feb 7 '14 at 16:11
BasjBasj
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How to get the instance id from within an ec2 instance?
...See the EC2 documentation on the subject.
Run:
wget -q -O - http://169.254.169.254/latest/meta-data/instance-id
If you need programatic access to the instance ID from within a script,
die() { status=$1; shift; echo "FATAL: $*"; exit $status; }
EC2_INSTANCE_ID="`wget -q -O - http://169.254.169.2...
How to call a Python function from Node.js
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answered May 4 '14 at 4:47
NeverForgetY2KNeverForgetY2K
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How to merge 2 JSON objects from 2 files using jq?
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Since 1.4 this is now possible with the * operator. When given two objects, it will merge them recursively. For example,
jq -s '.[0] * .[1]' file1 file2
Important: Note the -s (--slurp) flag, which puts files in the same array.
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C# Entity-Framework: How can I combine a .Find and .Include on a Model Object?
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Squirrel in training
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answered Sep 8 '11 at 13:19
Dennis TraubDennis Traub
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How does the String class override the + operator?
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The toString method is defined by the primordial class Object
(§4.3.2). Many classes override it, notably Boolean, Character,
Integer, Long, Float, Double, and String.
See §5.4 for details of the string conversion context.
15.18.1.
Optimization of String Concatenation :
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Instance variable: self vs @
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Writing @age directly accesses the instance variable @age. Writing self.age tells the object to ...