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How do I check if a directory exists? “is_dir”, “file_exists” or both?
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Both would return true on Unix systems - in Unix everything is a file, including directories. But to test if that name is taken, you should check both. There might be a regular file named 'foo', which would prevent you from creating a directory name 'foo'.
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How do I consume the JSON POST data in an Express application
...ed by apps that do not use requests. They could have made it separate, and included it in express by default.
– J.J
Oct 23 '16 at 14:31
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How do you see the entire command history in interactive Python?
... You need to quit() the interpreter for the current session history to be included in ~/.python_history
– plexoos
Sep 12 '18 at 18:37
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Working with README.md on github.com [closed]
...ndered version of a diff on a markdown file:
Commits and pull requests including prose files now feature source and rendered views.
Non-text changes appear with a low-key dotted underline. Hover over the text to see what has changed:
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Regex to match only letters
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it doesn't include diacritic signs such as ŹŻŚĄ
– karoluS
Sep 24 '18 at 7:37
How to find available versions for a bower dependency
Let's say I want to include the latest version of jquery-ui in my bower.json. Is there any way of finding out which versions are available?
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Add a column to a table, if it does not already exist
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When checking for a column in another database, you can simply include the database name:
IF NOT EXISTS (
SELECT *
FROM DatabaseName.sys.columns
WHERE object_id = OBJECT_ID(N'[DatabaseName].[dbo].[TableName]')
AND name = 'ColumnName'
)
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Recreating a Dictionary from an IEnumerable
....net core doesn't have <obvious feature>" is resolved via MoreLinq. Including a parameterless IEnumerable<KeyValuePair> -> ToDictionary()
– aaaaaa
Dec 6 '17 at 21:42
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Transaction count after EXECUTE indicates a mismatching number of BEGIN and COMMIT statements. Previ
... transactions, a ROLLBACK operation rolls back all the nested transactions including the outer-most one.
This might, with usage in combination with TRY/CATCH, result in the error you described. See more here.
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How to check if object property exists with a variable holding the property name?
...-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty
To include inherited properties in the finding use the in operator: (but you must place an object at the right side of 'in', primitive values will throw error, e.g. 'length' in 'home' will throw error, but 'length' in new Strin...