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Why are Oracle table/column/index names limited to 30 characters?
..., but there is always a case that turns up where we hit this limit - especially in naming foreign keys.
10 Answers
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Node.js: printing to console without a trailing newline?
...t it's not a newline character itself. I was getting a literal ` followed by an n`, when I wanted to output a real newline character.
– Paul
Apr 29 '15 at 22:30
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return query based on date
...d 1 for ascending)
db.things.createIndex({ createdAt: -1 }) // descending order on .createdAt
Then query for documents created in the last 5 minutes (60 seconds * 5 minutes)....because javascript's .getTime() returns milliseconds you need to mulitply by 1000 before you use it as input to the new ...
Which Eclipse files belong under version control?
...h Configuration preference panel: It is common to soft-delete a project in order to import it back again - to force a reinitialization of the eclipse metadata. But this option, if checked, will remove your detailed launch parameters!)
project-dir/.project
project-dir/.classpath
project-dir/.setting...
Remove Object from Array using JavaScript
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This however will remove all the occurrences found, not only the first one
– Flavien Volken
Jul 12 '16 at 6:49
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Detect the Internet connection is offline?
...ing, because we need a useful response from the communication mechanism in order to draw a good conclusion about what's going on. So again, determining the state of the internet connection as a whole may be more trouble than it's worth. You'll have to weight these options out for your specific app...
What is the difference between the bridge pattern and the strategy pattern?
...D. The functionality for each button is abstracted from the implementation by the implementer interface.
This allows us to change how the remote will work for each device.
Strategy (Behavioural)
Define a family of algorithms , encapsulate each one and make them interchangeable.
In stra...
Determine if Android app is being used for the first time
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Beware for Android 6.0 (API 23 - Marshmallow) or above auto backup (developer.android.com/guide/topics/data/autobackup.html)is enabled by default. If the users uninstalls and then reinstalls the app the shared preferences will be recovered. So on reinstalls you ca...
How to get the IP address of the docker host from inside a docker container
...r, that's what bridge IP can give you (of course in the stndard "home" installation). Why anybody would need "real" host IP if it can be even outside of docker bridge and can be unaccessible? This is the solution for all people who just installed docker and want to play with it in a short time.
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List all tables in postgresql information_schema
What is the best way to list all of the tables within PostgreSQL's information_schema?
8 Answers
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