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In which scenario do I use a particular STL container?
I've been reading up on STL containers in my book on C++, specifically the section on the STL and its containers. Now I do understand each and every one of them have their own specific properties, and I'm close to memorizing all of them... But what I do not yet grasp is in which scenario each of the...
Are there disadvantages to using a generic varchar(255) for all text-based fields?
I have a contacts table which contains fields such as postcode , first name , last name , town , country , phone number etc, all of which are defined as VARCHAR(255) even though none of these fields will ever come close to having 255 characters. (If you're wondering, it's this way becaus...
Why is printing to stdout so slow? Can it be sped up?
I've always been amazed/frustrated with how long it takes to simply output to the terminal with a print statement. After some recent painfully slow logging I decided to look into it and was quite surprised to find that almost all the time spent is waiting for the terminal to process the results.
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grep, but only certain file extensions
I am working on writing some scripts to grep certain directories, but these directories contain all sorts of file types.
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How to convert a string of numbers to an array of numbers?
I have below string -
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Why is lazy evaluation useful?
I have long been wondering why lazy evaluation is useful. I have yet to have anyone explain to me in a way that makes sense; mostly it ends up boiling down to "trust me".
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OSX - How to auto Close Terminal window after the “exit” command executed.
When I'm done with Terminal, I want to exit it. Right now, I have three options:
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Python String and Integer concatenation [duplicate]
I want to create string using integer appended to it, in a for loop. Like this:
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Python: access class property from string [duplicate]
I have a class like the following:
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解决：ORA-00054:资源正忙,要求指定NOWAIT - 数据库(内核) - 清泛网 - 专注...
解决：ORA-00054:资源正忙,要求指定NOWAIT创建索引的时候报错ORA-00054: resource busy and acquire with NOWAIT specified解决步骤：1：等待其他会话释放资源2：找出占用资 创建索引的时候报错ORA-00054: resource busy and acquire with NOWAIT specified
解决...