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Better to 'try' something and catch the exception or test if it's possible first to avoid an excepti
Should I test if something is valid or just try to do it and catch the exception?
8 Answers
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How do I manage MongoDB connections in a Node.js web application?
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The primary committer to node-mongodb-native says:
You open do MongoClient.connect once when your app boots up and reuse
the db object. It's not a singleton connection pool each .connect
creates a new connection pool.
So, to answer your question directly, reuse the db object tha...
How do I escape spaces in path for scp copy in Linux?
...locally and then on the remote end.
There are a couple of options you can do (in bash):
scp user@example.com:"'web/tmp/Master File 18 10 13.xls'" .
scp user@example.com:"web/tmp/Master\ File\ 18\ 10\ 13.xls" .
scp user@example.com:web/tmp/Master\\\ File\\\ 18\\\ 10\\\ 13.xls .
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Check for null in foreach loop
Is there a nicer way of doing the following:
I need a check for null to happen on file.Headers before proceeding with the loop
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Find if variable is divisible by 2
How do I figure out if a variable is divisible by 2? Furthermore I need do a function if it is and do a different function if it is not.
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Take a screenshot of a webpage with JavaScript?
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I have done this for an HTA by using an ActiveX control. It was pretty easy to build the control in VB6 to take the screenshot. I had to use the keybd_event API call because SendKeys can't do PrintScreen. Here's the code for that:
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How do I hide .class files from the Open Resource dialog in Eclipse?
...ass files from ever showing in the Open Resource Dialog. Is there a way to do this?
9 Answers
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switch / pattern matching idea
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I know it's an old topic, but in c# 7 you can do :
switch(shape)
{
case Circle c:
WriteLine($"circle with radius {c.Radius}");
break;
case Rectangle s when (s.Length == s.Height):
WriteLine($"{s.Length} x {s.Height} square");
bre...
How do I rename a Git repository?
git mv renames a file or directory in a repository. How do I rename the Git repository itself?
18 Answers
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How do you check if a certain index exists in a table?
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You can do it using a straight forward select like this:
SELECT *
FROM sys.indexes
WHERE name='YourIndexName' AND object_id = OBJECT_ID('Schema.YourTableName')
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