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MySQL - Make an existing Field Unique
I have an already existing table with a field that should be unique but is not. I only know this because an entry was made into the table that had the same value as another, already existing, entry and this caused problems.
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python capitalize first letter only
I am aware .capitalize() capitalizes the first letter of a string but what if the first character is a integer?
8 Answers
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How to serialize an Object into a list of URL query parameters?
Without knowing the keys of a JavaScript Object , how can I turn something like...
22 Answers
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How do I test a private function or a class that has private methods, fields or inner classes?
How do I unit test (using xUnit) a class that has internal private methods, fields or nested classes? Or a function that is made private by having internal linkage ( static in C/C++) or is in a private ( anonymous ) namespace?
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How to implement infinity in Java?
Does Java have anything to represent infinity for every numerical data type? How is it implemented such that I can do mathematical operations with it?
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How do I revert a Git repository to a previous commit?
How do I revert from my current state to a snapshot made on a certain commit?
41 Answers
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How can I pass a list as a command-line argument with argparse?
I am trying to pass a list as an argument to a command line program. Is there an argparse option to pass a list as option?
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Arduino101（Genuino 101）&App Inventor – RGB LED控制 - 创客硬件开...
繁体中文原文：https://blog.cavedu.com/2017/02/ ... %e6%8e%a7%e5%88%b6/
本文將介紹如何取得觸碰點的 RGB 參數之後透過 BLE 送給 Arduino 101 來點亮 RGB LED。
App InventorDesigner使用 Canvas 來取得觸碰點座標。兩個連線斷線用的按鈕：Btn_Connect /&n...
Why should I care about lightweight vs. annotated tags?
I switched from Subversion to Git as my day-to-day VCS last year and am still trying to grasp the finer points of "Git-think".
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Append values to a set in Python
I have a set like this:
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