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How to add leading zeros?
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Note that sprintf converts numeric to string (character).
– aL3xa
Apr 28 '11 at 8:54
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Why does Oracle 9i treat an empty string as NULL?
... spot on. The most confusing situations arise when '' is being implicitely converted to a VARCHAR2, such as cast('' as char(1)) is null which is... surprisingly TRUE
– sehe
Jul 19 '13 at 15:17
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Show/Hide the console window of a C# console application
...the console window by its title . I dug a bit deeper into the Windows API and found that there is a much better and easier way, so I wanted to post it here for others to find.
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push_back vs emplace_back
I'm a bit confused regarding the difference between push_back and emplace_back .
7 Answers
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What is the reason behind cbegin/cend?
I wonder why cbegin and cend were introduced in C++11?
7 Answers
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What is the difference between atomic / volatile / synchronized?
...return counter++;
}
It basically reads value from memory, increments it and puts back to memory. This works in single thread but nowadays, in the era of multi-core, multi-CPU, multi-level caches it won't work correctly. First of all it introduces race condition (several threads can read the value...
builtins.TypeError: must be str, not bytes
I've converted my scripts from Python 2.7 to 3.2, and I have a bug.
2 Answers
2
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JSON Array iteration in Android/Java
I am building an android app that needs to download and synchronise with an online database, I am sending my query from the app to a php page which returns the relevant rows from a database in JSON format.
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Create an enum with string values
...at way it will return the string value whenever accessed and not just when converting toString().
– John
Feb 28 '14 at 23:37
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How to use null in switch
... Integer or other Wrapper class, because of unboxing. But what about enums and strings? Why can't they be null?
– Luan Nico
Nov 2 '13 at 11:20
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