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What should every developer know about databases? [closed]
...s developers either regularly work with databases or may have to work with one someday. And considering the amount of misuse and abuse in the wild, and the volume of database-related questions that come up every day, it's fair to say that there are certain concepts that developers should know - eve...
Replace all non Alpha Numeric characters, New Lines, and multiple White Space with one Space
...why it is not ignoring in the first model and is my regex is the efficient one.
– Sridhar Gudimela
Jan 25 '18 at 19:50
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Gradle build only one module
I have a multiple module gradle build. I want to execute targets for one module using root.
Ex :
4 Answers
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How to add elements of a Java8 stream into an existing List
...or shows how to collect elements of a stream into a new List. Is there an one-liner that adds the results into an existing ArrayList?
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Displaying files (e.g. images) stored in Google Drive on a website
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However, apparently this URL (at least the "view" one) only works when the user viewing it is logged in to Google (Drive?). In an anonymous browsing window, I received a login page instead of the (publicly shared) image I requested.
– scy
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Looping through the content of a file in Bash
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One way to do it is:
while read p; do
echo "$p"
done <peptides.txt
As pointed out in the comments, this has the side effects of trimming leading whitespace, interpreting backslash sequences, and skipping the last line...
How do I fix a NoSuchMethodError?
...gainst a different version of the class that is missing a method, than the one you are using when running it.
Look at the stack trace ... If the exception appears when calling a method on an object in a library, you are most likely using separate versions of the library when compiling and running. ...
Returning multiple objects in an R function [duplicate]
...t;-" type "<<-". The function will recursively and repeatedly search one functional level higher for an object of that name. If it can't find one, it will create one on the global level.
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How to modify a global variable within a function in bash?
... Subshells inherit variables from their parent shells, but this only works one way - a subshell cannot modify the environment of its parent shell. Your variable e is set within a subshell, but not the parent shell. There are two ways to pass values from a subshell to its parent. First, you can outpu...
What's the difference between a catalog and a schema in a relational database?
... An
SQL-environment contains zero or more catalogs. A catalog contains
one or more schemas, but always contains a schema named
INFORMATION_SCHEMA that contains the views and domains of the
Information Schema.
Database Language SQL, (Proposed revised text of DIS 9075), p 45
From the SQL po...