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Javascript “this” pointer within nested function
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@Arashsoft this in this.doSomeEffects() points to std_obj. As explained in the answer above if a function doesn't have object reference then it takes this to be a window object.
– Shivam
Jun 28 '19 at 18:46
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URL Encoding using C#
... %5E %5E ^ ^ %5E
_ _ _ _ _ _ _ _ %5F
` %60 %60 ` %60 %60 ` ...
What are the differences between numpy arrays and matrices? Which one should I use?
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Or just np.linalg.matrix_power(mat, n)
– Eric
Feb 28 '17 at 11:16
I...
Using braces with dynamic variable names in PHP
...rom phpNET manual php.net/manual/ru/language.variables.variable.php $price_for_monday = 10; $price_for_tuesday = 20; $today = 'tuesday'; $price_for_today = ${ 'price_for_' . $today}; echo $price_for_today; // will return 20
– Vladimir Ch
Apr 20 '18 at 21:08
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How can I check for Python version in a program that uses new language features?
...oesn't have ternary
Also, with is available in Python 2.5, just add from __future__ import with_statement.
EDIT: to get control early enough, you could split it into different .py files and check compatibility in the main file before importing (e.g. in __init__.py in a package):
# __init__.py
#...
“Incorrect string value” when trying to insert UTF-8 into MySQL via JDBC?
...y 4 bytes in UTF-8.
You may also have to set the server property character_set_server to utf8mb4 in the MySQL configuration file. It seems that Connector/J defaults to 3-byte Unicode otherwise:
For example, to use 4-byte UTF-8 character sets with Connector/J, configure the MySQL server with cha...
Convert hyphens to camel case (camelCase)
...and have it included in your project.
var str = 'my-hyphen-string';
str = _.camelCase(str);
// results in 'myHyphenString'
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Test if a variable is a list or tuple
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How about: hasattr(a, "__iter__") ?
It tells if the object returned can be iterated over as a generator. By default, tuples and lists can, but not the string types.
share...
_DEBUG vs NDEBUG
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Visual Studio defines _DEBUG when you specify the /MTd or /MDd option, NDEBUG disables standard-C assertions. Use them when appropriate, ie _DEBUG if you want your debugging code to be consistent with the MS CRT debugging techniques and NDEBUG if ...
The most accurate way to check JS object's type?
... constructor:
Native Type Ex1:
var string1 = "Test";
console.log(string1.__proto__.constructor.name);
displays:
String
Ex2:
var array1 = [];
console.log(array1.__proto__.constructor.name);
displays:
Array
Custom Classes:
function CustomClass(){
console.log("Custom Class Object C...