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System.currentTimeMillis vs System.nanoTime
...s in hotspot/src/os/windows/vm/os_windows.cpp in OpenJDK (hg.openjdk.java.net/jdk8/jdk8/hotspot/file/87ee5ee27509/src/os/…). Looks like it's still GetSystemTimeAsFileTime, so I do not know where change comes from. Or if it's even valid. Test before using.
– user3458
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Is there a regular expression to detect a valid regular expression?
...?\)|\(\?(?:R|[+-]?\d+)\))(?:(?:[?+*]|\{\d+(?:,\d*)?\})[?+]?)?|\|)*)$/
.NET does not support recursion directly. (The (?1) and (?R) constructs.) The recursion would have to be converted to counting balanced groups:
^ # start of string
(?:
(?: [^?+*{}()[\...
Can attributes be added dynamically in C#?
...that references using Reflection.Emit to do so.
Here's the link: http://www.codeproject.com/KB/cs/dotnetattributes.aspx , you will also want to look into some of the comments at the bottom of the article, because possible approaches are discussed.
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Dealing with float precision in Javascript [duplicate]
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Check out this link.. It helped me a lot.
http://www.w3schools.com/jsref/jsref_toprecision.asp
The toPrecision(no_of_digits_required) function returns a string so don't forget to use the parseFloat() function to convert to decimal point of required precision.
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browser sessionStorage. share between tabs?
...E8 support as well. :)
Credit goes to this full article:
http://blog.guya.net/2015/06/12/sharing-sessionstorage-between-tabs-for-secure-multi-tab-authentication/
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How to find out element position in slice?
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
Difference between a “coroutine” and a “thread”?
...ppen). The
kernel is not involved in the coroutine switches.
—http://www.boost.org/doc/libs/1_55_0/libs/coroutine/doc/html/coroutine/overview.html
A language that supports native threads can execute its threads (user threads) onto the operating system's threads (kernel threads). Every proces...
What is the difference between -viewWillAppear: and -viewDidAppear:?
...m my domain into the form" in viewWillAppear? You mean downloading through network? But you also suggest download stuff in viewDidAppear?
– Philip007
Dec 3 '12 at 9:28
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When to throw an exception?
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"missing file on disk" Most language frameworks, e.g. .NET framework, provides APIs to check for file existence as well. Why not use them before accessing the file directly!
– user1451111
Jun 15 '18 at 12:16
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How to check if an app is installed from a web-page on an iPhone?
... using techniques like console logging, alerts, or Web Inspector, jsfiddle.net etc all had their drawbacks in this work flow. Rather than using a time threshold, the Javascript counts the number of "pagehide" and "pageshow" events to see whether they have occurred. And I found that the most robust...