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What is a Question Mark “?” and Colon “:” Operator Used for? [duplicate]
...ind more information on their use? I've read that they are similar to an 'if' 'else' statement.
7 Answers
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When to use Preorder, Postorder, and Inorder Binary Search Tree Traversal strategies
I realized recently that while having used BST's plenty in my life, I've never even contemplated using anything but Inorder traversal (while I am aware of and know how easy it is to adapt a program to use pre/post-order traversal).
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What is the use of the @ symbol in PHP?
... messages that might be generated by that expression will be ignored.
If you have set a custom error handler function with set_error_handler() then it will still get called, but this custom error handler can (and should) call error_reporting() which will return 0 when the call that triggered th...
Java volatile reference vs. AtomicReference
Is there any difference between a volatile Object reference and AtomicReference in case I would just use get() and set() -methods from AtomicReference ?
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Can two Java methods have same name with different return types? [duplicate]
Can two Java methods have the same name with different return type ? The return type of the methods are different and they are declared with the same method's name.
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How to test if a double is an integer
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if ((variable == Math.floor(variable)) && !Double.isInfinite(variable)) {
// integer type
}
This checks if the rounded-down value of the double is the same as the double.
Your variable could have an int or doub...
Calling a parent window function from an iframe
I want to call a parent window JavaScript function from an iframe.
10 Answers
10
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Get IP address of visitors using Flask for Python
...emote_addr.
Code example
from flask import request
from flask import jsonify
@app.route("/get_my_ip", methods=["GET"])
def get_my_ip():
return jsonify({'ip': request.remote_addr}), 200
For more information see the Werkzeug documentation.
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Get Enum from Description attribute [duplicate]
...
foreach(var field in typeof(T).GetFields())
{
if (Attribute.GetCustomAttribute(field,
typeof(DescriptionAttribute)) is DescriptionAttribute attribute)
{
if (attribute.Description == description)
return (T)field....
Calculating a directory's size using Python?
...or calculating the size of a directory using Python? It would be very nice if the routine would format the size nicely in Mb/Gb etc.
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