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How to check whether a Storage item is set?
... use hasOwnProperty method to check this
> localStorage.setItem('foo', 123)
undefined
> localStorage.hasOwnProperty('foo')
true
> localStorage.hasOwnProperty('bar')
false
Works in current versions of Chrome(Mac), Firefox(Mac) and Safari.
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.NET String.Format() to add commas in thousands place for a number
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String.Format("{0:n}", 1234); // Output: 1,234.00
String.Format("{0:n0}", 9876); // No digits after the decimal point. Output: 9,876
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How to wait in a batch script? [duplicate]
...orry about unexpected early returns (say, there's no default route and the 123.45.67.89 is instantly known to be unreachable.)
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Do I need dependency injection in NodeJS, or how to deal with …?
... setter and getter for private variables.
myModule.__set__("myPrivateVar", 123);
myModule.__get__("myPrivateVar"); // = 123
// This allows you to mock almost everything within the module e.g. the fs-module.
// Just pass the variable name as first parameter and your mock as second.
myModule.__set__...
Failed to build gem native extension (installing Compass)
...by-2.1.2 as 1.9.3 is no longer being updated
– timelf123
Aug 13 '14 at 16:47
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How to convert List to List?
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vcsjonesvcsjones
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How to check if string input is a number? [duplicate]
...numeric() will do the job (Documentation for python3.x):
>>>a = '123'
>>>a.isnumeric()
True
But remember:
>>>a = '-1'
>>>a.isnumeric()
False
isnumeric() returns True if all characters in the string are numeric characters, and there is at least one character....
App Inventor 2 文本代码块 · App Inventor 2 中文网
... 隐私策略和使用条款 技术支持 service@fun123.cn
Adding header for HttpURLConnection
...on.setConnectTimeout(60 * 1000);
String authorization="xyz:xyz$123";
String encodedAuth="Basic "+Base64.encode(authorization.getBytes());
connection.setRequestProperty("Authorization", encodedAuth);
int responseCode = connection.getResponseCode();
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How do you check in python whether a string contains only numbers?
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Use str.isdigit:
>>> "12345".isdigit()
True
>>> "12345a".isdigit()
False
>>>
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