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Convert ArrayList to String[] array [duplicate]
... To provide an explanation as to what is going on here, the JVM doesn't know how to blindly downcast Object[] (the result of toArray()) to String[]. To let it know what your desired object type is, you can pass a typed array into toArray(). The typed array can be of any size (new String[1] is vali...
What is the right way to override a setter method in Ruby on Rails?
I am using Ruby on Rails 3.2.2 and I would like to know if the following is a "proper"/"correct"/"sure" way to override a setter method for a my class attribute.
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Is there any haskell function to concatenate list with separator?
...uch","a","function","?"])
"is there such a function ?"
Also, for the specific case where you want to join with a space character, there is unwords:
Prelude> unwords ["is","there","such","a","function","?"]
"is there such a function ?"
unlines works similarly, only that the strings are implod...
Get first and last day of month using threeten, LocalDate
... last day of the current month, this becomes:
LocalDate start = YearMonth.now().atDay(1);
LocalDate end = YearMonth.now().atEndOfMonth();
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Simpler way to put PDB breakpoints in Python code?
... whatever other languages you use.
2019 Update (Python 3.7+)
Python 3.7+ now has the builtin breakpoint() which can replace the previous import pdb; pdb.set_trace() in vim. It still works the same.
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Git push existing repo to a new and different remote repo server?
...upstream
git remote add origin URL_TO_GITHUB_REPO
git push origin master
Now you can work with it just like any other github repo. To pull in patches from upstream, simply run git pull upstream master && git push origin master.
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为AppInventor2开发自己的拓展(Extension) - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
来源中文网文档：https://www.fun123.cn/reference/extensions/aix_dev.html
为什么需要开发拓展？App Inventor 2 是积木式在线安卓开发环境，利用拖拽式的方式实现代码块堆叠，从而完成相应的逻辑。上手很容易，但是由于代码块提供的功能...
Visual Studio Copy Project
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This is incredibly useful, how did I not know about this before? Thanks!
– Aldarrion
Jan 8 '18 at 17:23
5
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Calculate relative time in C#
... 24 * HOUR;
const int MONTH = 30 * DAY;
var ts = new TimeSpan(DateTime.UtcNow.Ticks - yourDate.Ticks);
double delta = Math.Abs(ts.TotalSeconds);
if (delta < 1 * MINUTE)
return ts.Seconds == 1 ? "one second ago" : ts.Seconds + " seconds ago";
if (delta < 2 * MINUTE)
return "a minute ago"...
What is the difference between gravity and layout_gravity in Android?
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See, I find this funny, because if I just go off the names, my intuition is the other way around. Every time, I think "layout_gravity" means "the gravity for how this ViewGroup lays out it's contents", and "gravity" is "where this View gravitates to".
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