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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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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....
How to convert int to QString?
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123
And if you want to put it into string within some text context, forget about + operator.
Simp...
How do I convert a Django QuerySet into list of dicts?
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David WoleverDavid Wolever
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What are the use cases for selecting CHAR over VARCHAR in SQL?
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(CustomerFirstName,CustomerLastName, CustomerCityStateZip) ('Joe','Blow','123 Main St Washington, MD 12345', 123.45)
create view vwStagingTable AS
SELECT CustomerFirstName = CAST(CustomerFirstName as CHAR(30)),
CustomerLastName = CAST(CustomerLastName as CHAR(30)),
CustomerCityStateZip = CAST(Cust...
MySQL Query to select data from last week?
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123
SELECT id FROM tbl
WHERE date >= curdate() - INTERVAL DAYOFWEEK(curdate())+6 DAY
AND date &...
Android- create JSON Array and JSON Object
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Swapnil KotwalSwapnil Kotwal
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Changing column names of a data frame
...k it was asked for data.frame, not data.table
– Helix123
Apr 16 '15 at 19:15
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Keyword not supported: “data source” initializing Entity Framework Context
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Craig StuntzCraig Stuntz
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