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SQL - Rounding off to 2 decimal places
... cast your result as numeric(x,2)? Where x <= 38
select
round(630/60.0,2),
cast(round(630/60.0,2) as numeric(36,2))
Returns
10.500000 10.50
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Javascript calculate the day of the year (1 - 366)
...te(now.getFullYear(), 0, 0);
var diff = now - start;
var oneDay = 1000 * 60 * 60 * 24;
var day = Math.floor(diff / oneDay);
console.log('Day of year: ' + day);
Edit: The code above will fail when now is a date in between march 26th and October 29th andnow's time is before 1AM (eg 00:59:59...
How do I make a Mac Terminal pop-up/alert? Applescript?
...e MIN= to whatever and a message
MIN=15 && for i in $(seq $(($MIN*60)) -1 1); do echo "$i, "; sleep 1; done; echo -e "\n\nMac Finder should show a popup" afplay /System/Library/Sounds/Funk.aiff; osascript -e 'tell app "Finder" to display dialog "Look away. Rest your eyes"'
A bonus example...
How do I add 24 hours to a unix timestamp in php?
...s to a Unix timestamp we just add the number of seconds in 24 hours. (24 * 60 *60)
time() + 24*60*60;
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Set the absolute position of a view
...use RelativeLayout. Let's say you wanted a 30x40 ImageView at position (50,60) inside your layout. Somewhere in your activity:
// Some existing RelativeLayout from your layout xml
RelativeLayout rl = (RelativeLayout) findViewById(R.id.my_relative_layout);
ImageView iv = new ImageView(this);
Relat...
Linux进程与线程总结 [推荐] - C/C++ - 清泛网 - 专注C/C++及内核技术
...进程都共有一个最原始的父进程init，其pid为1，所以每隔1秒查询一次父进程状态，直至父进程终止。
以上由fork函数创建的进程是具有亲缘关系的进程，即父子进程或兄弟进程。其原理实际上与传统的没有亲缘关系的独立进程类...
How to get 30 days prior to current date?
...
startDate = new Date(today.getTime() - 30*24*60*60*1000);
The .getTime() method returns a standard JS timestamp (milliseconds since Jan 1/1970) on which you can use regular math operations, which can be fed back to the Date object directly.
...
How to set timer in android?
... int seconds = (int) (millis / 1000);
int minutes = seconds / 60;
seconds = seconds % 60;
text.setText(String.format("%d:%02d", minutes, seconds));
return false;
}
});
//runs without timer be reposting self
Handler h2 = new Handle...
How to make a countdown timer in Android?
...
Did you check the link?
– user5156016
Sep 24 '15 at 13:05
What if I want to make the text red when...
Add number of days to a date
...n issue when you do something like this OP: stackoverflow.com/questions/4066035
– Gordon
Jul 23 '14 at 16:51
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