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Can I query MongoDB ObjectId by date?
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What does [:] mean?
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It is an example of slice notation, and what it does depends on the type of population. If po...
How to get the nth occurrence in a string?
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How to escape braces (curly brackets) in a format string in .NET
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List All Redis Databases
...atabases is fixed, and set in the configuration file. By default, you have 16 databases. Each database is identified by a number (not a name).
You can use the following command to know the number of databases:
CONFIG GET databases
1) "databases"
2) "16"
You can use the following command to list ...
Get number of digits with JavaScript
...d like to know how many digits var number has. For example: If number = 15; my function should return 2 . Currently, it looks like this:
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How to comment out a block of Python code in Vim
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HMAC-SHA1 in bash
Is there a bash script to generate a HMAC-SHA1 hash?
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Linux command (like cat) to read a specified quantity of characters
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head works too:
head -c 100 file # returns the first 100 bytes in the file
..will extract ...
How do I check that a number is float or integer?
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