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Test if a variable is set in bash when using “set -o nounset”
The following code exits with a unbound variable error. How to fix this, while still using the set -o nounset option?
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How do you create a random string that's suitable for a session ID in PostgreSQL?
I'd like to make a random string for use in session verification using PostgreSQL. I know I can get a random number with SELECT random() , so I tried SELECT md5(random()) , but that doesn't work. How can I do this?
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How is Node.js inherently faster when it still relies on Threads internally?
I just watched the following video: Introduction to Node.js and still don't understand how you get the speed benefits.
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Exclude .svn directories from grep [duplicate]
When I grep my Subversion working copy directory, the results include a lot of files from the .svn directories. Is it possible to recursively grep a directory, but exclude all results from .svn directories?
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App Inventor 2 字典 vs 列表：同样存数据，性能差了10倍？ - App应用开发 ...
<font size="4"><b>App Inventor 2 字典 vs 列表：同样存数据，性能差了10倍？</b></font><br><br><br>在做 App 开发时，你可能会遇到这样一个场景：要存储一组学生信息，包含姓名、年龄、班级，然后需要快速根据姓名查到对应的班级。用列...
How to determine if binary tree is balanced?
It's been a while from those school years. Got a job as IT specialist at a hospital. Trying to move to do some actual programming now. I'm working on binary trees now, and I was wondering what would be the best way to determine if the tree is height-balanced.
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What is the IntelliJ shortcut to create a local variable?
In Eclipse if you have a method:
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How to find a text inside SQL Server procedures / triggers?
I have a linkedserver that will change. Some procedures call the linked server like this: [10.10.100.50].dbo.SPROCEDURE_EXAMPLE . We have triggers also doing this kind of work. We need to find all places that uses [10.10.100.50] to change it.
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Calling C/C++ from Python?
What would be the quickest way to construct a Python binding to a C or C++ library?
16 Answers
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What is the best way to test for an empty string in Go?
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