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Differences between TCP sockets and web sockets, one more time [duplicate]
... TCP socket and websocket, I've already found a lot of useful information within these questions:
2 Answers
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How to compare two colors for similarity/difference
...n 5 pre-defined colors which one is more similar to a variable color, and with what percentage. The thing is that I don't know how to do that manually step by step. So it is even more difficult to think of a program.
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how can I Update top 100 records in sql server
I want to update the top 100 records in SQL Server. I have a table T1 with fields F1 and F2 . T1 has 200 records. I want to update the F1 field in the top 100 records. How can I update based on TOP 100 in SQL Server?
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How to debug .htaccess RewriteRule not working
I have a RewriteRule in a .htaccess file that isn't doing anything. How do I troubleshoot this?
8 Answers
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Make the first letter uppercase inside a django template
... as myname . How do I display this inside a Django template as Myname , with the first letter being in uppercase.
6 Answe...
Display open transactions in MySQL
I did some queries without a commit. Then the application was stopped.
4 Answers
4
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detach all packages while working in R
...ssionInfo()$otherPkgs),sep=""),detach,character.only=TRUE,unload=TRUE)
(edit: 6-28-19)
In the latest version of R 3.6.0 please use instead.
invisible(lapply(paste0('package:', names(sessionInfo()$otherPkgs)), detach, character.only=TRUE, unload=TRUE))
Note the use of invisible(*) is not necessary ...
C# equivalent of the IsNull() function in SQL Server
...er you can use the IsNull() function to check if a value is null, and if it is, return another value. Now I am wondering if there is anything similar in C#.
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MySQL query to get column names?
...`TABLE_SCHEMA`='yourdatabasename'
AND `TABLE_NAME`='yourtablename';
It's VERY powerful, and can give you TONS of information without need to parse text (Such as column type, whether the column is nullable, max column size, character set, etc)...
Oh, and it's standard SQL (Whereas SHOW ... is...
Convert hex string to int
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It's simply too big for an int (which is 4 bytes and signed).
Use
Long.parseLong("AA0F245C", 16);
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