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How to convert DateTime? to DateTime
...ode.
DateTime UpdatedTime = _objHotelPackageOrder.UpdatedDate ?? DateTime.Now;
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Get a UTC timestamp [duplicate]
...! Finally I understand why people keep saying new Date().getTime() or Date.now() is UTC but when I try console.log(new Date()), it displays time in my timezone. The Date internally has the timestamp (milliseconds) in UTC (w/c is what is returned in getTime() or now()), and it also has "your timezone...
How can I check for “undefined” in JavaScript? [duplicate]
...n window; // true
"theFoo" in window; // false
If you are interested in knowing whether the variable hasn't been declared or has the value undefined, then use the typeof operator, which is guaranteed to return a string:
if (typeof myVar !== 'undefined')
Direct comparisons against undefined are ...
Javascript calculate the day of the year (1 - 366)
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Following OP's edit:
var now = new Date();
var start = new Date(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 ab...
javascript: pause setTimeout();
...nction() {
window.clearTimeout(timerId);
remaining -= Date.now() - start;
};
this.resume = function() {
start = Date.now();
window.clearTimeout(timerId);
timerId = window.setTimeout(callback, remaining);
};
this.resume();
};
var timer = new ...
How can I find the length of a number?
...ake its absolute value and adjust the sign afterwards.
Update for ES2015
Now that Math.log10 is a thing, you can simply write
const len = Math.ceil(Math.log10(num + 1));
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Date ticks and rotation in matplotlib
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import numpy as np
import matplotlib.pyplot as plt
import datetime as dt
now = dt.datetime.now()
hours = [now + dt.timedelta(minutes=x) for x in range(0,24*60,10)]
days = [now + dt.timedelta(days=x) for x in np.arange(0,30,1/4.)]
hours_value = np.random.random(len(hours))
days_value = np.random.ra...
Changing Ctrl + Tab behavior for moving between documents in Visual Studio
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This is the best answer now for visual studio 2010. This was very helpful. The accepted macro solution is inferior to this one.
– jmq
Mar 1 '11 at 21:19
...
Run a callback only if an attribute has changed in Rails
...saving to the database, or within the before_save filter:
changes should now be changes_to_save
changed? should now be has_changes_to_save?
changed should now be changed_attribute_names_to_save
<attribute>_change should now be <attribute>_change_to_be_saved
<attribute>_changed? s...
Chrome: timeouts/interval suspended in background tabs?
I was testing the accuracy of setTimeout using this test . Now I noticed that (as expected) setTimeout is not very accurate but for most appliances not dramatically inaccurate. Now if I run the test in in Chrome and let it run in a background tab (so, switching to another tab and browse on ther...