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How to check whether a file or directory exists?
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You can use this :
if _, err := os.Stat("./conf/app.ini"); err != nil {
if os.IsNotExist(...
Can I create a named default constraint in an add column statement in SQL Server?
...a code only answer is rather thin " - that's nonsense. SO is a programming site.
– Mitch Wheat
Jul 28 at 6:57
@MitchWh...
SET versus SELECT when assigning variables?
...(so you'd likely never know why something was going wrong elsewhere - have fun troubleshooting that one)
When assigning from a query if there is no value returned then SET will assign NULL, where SELECT will not make the assignment at all (so the variable will not be changed from its previous valu...
Error: Tablespace for table xxx exists. Please DISCARD the tablespace before IMPORT
...table can be created again. Ubuntu 16, mariadb
– waza123
Jan 21 '19 at 18:07
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How do PHP sessions work? (not “how are they used?”)
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A session gets destroyed when the user closes the browser or leaves the site. The server also terminates the session after the predetermined period of session time expires. These are the simple mechanism steps that PHP is using to handle the session. I hope this article with help you to understan...
jQuery’s .bind() vs. .on()
..., delegate..., and all of the resulting confusion. After reading multiple sites on this issue, my opinion is that the best and most accurate sites are the ones that describe 'on' as "sugar-coating", sugar attracts bugs, and delegate is the way to go.
– DaveWalley
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How to get a URL parameter in Express?
...issue on getting the value of tagid from my URL: localhost:8888/p?tagid=1234 .
4 Answers
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What's the difference between a Python “property” and “attribute”?
...vides a realistic and useful example. I feel that too many answers on this site needlessly explain how things work on the back-end without clarifying how the user should interact with them. If one doesn't understand why/when to use some functionality, there is no point knowing how it operates behind...
How to get the mouse position without events (without moving the mouse)?
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+50
Edit 20...
How to pass a function as a parameter in Java? [duplicate]
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You could use Java reflection to do this. The method would be represented as an instance of j...