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inserting characters at the start and end of a string
...d a way to insert a number of L's at the beginning and end of a string. So if I have a string which says
7 Answers
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Filtering DataGridView without changing datasource
... is your data source? My example assumes that you are using a DataTable. If you are using something else, check your casting. "as DataTable" in my example.
– Brad Bruce
Jan 25 '18 at 1:22
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Write string to text file and ensure it always overwrites the existing content.
...that I want to write to a file and always overwrite the existing content. If the file isn't there, the program should create a new file instead of throwing an exception.
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Checking if a key exists in a JS object
...ust an object.
You can use the hasOwnProperty method to check for a key:
if (obj.hasOwnProperty("key1")) {
...
}
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How do I make a WinForms app go Full Screen
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this.WindowState = FormWindowState.Maximized;
}
But, interestingly, if you swap those last two lines the Taskbar remains visible. I think the sequence of these actions will be hard to control with the properties window.
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How can I rename a database column in a Ruby on Rails migration?
...le_name, :old_column, :new_column
end
def self.down
# rename back if you need or do something else or do nothing
end
end
For Rails 3.1 use:
While, the up and down methods still apply, Rails 3.1 receives a change method that "knows how to migrate your database and reverse it when the ...
Use HTML5 to resize an image before upload
I have found a few different posts and even questions on stackoverflow answering this question. I am basically implementing this same thing as this post .
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Performance of static methods vs instance methods
...se of the extra hidden this parameter.
In practice, this makes so little difference that it'll be hidden in the noise of various compiler decisions. (Hence two people could "prove" one better than the other with disagreeing results). Not least since the this is normally passed in a register and is ...
Is there any difference between “foo is None” and “foo == None”?
Is there any difference between:
12 Answers
12
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Reset auto increment counter in postgres
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If you created the table product with an id column, then the sequence is not simply called product, but rather product_id_seq (that is, ${table}_${column}_seq).
This is the ALTER SEQUENCE command you need:
ALTER SEQUENCE pr...