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How do I find the install time and date of Windows?
...the last feature update was installed, not the original install date.)
To convert that number into a readable date/time just paste the decimal value in the field "UNIX TimeStamp:" of this Unix Time Conversion online tool.
s...
关于App Inventor 2过程积木，被问最多的6个问题 - App应用开发 - 清泛IT社...
逛社区和技术群时发现一个有意思的现象：很多新手能熟练使用变量、循环、条件判断，但一提到"过程"（Procedures）就发怵——"感觉用不上""加了参数就搞不懂""不知道什么时候该用过程"。<br><br>其实过程（有的地方也叫"函数"...
Case insensitive XPath contains() possible?
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wouldn't it just convert TEST to test and leave Test as it is?
– Muhammad Adeel Zahid
Feb 27 '13 at 19:10
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Are members of a C++ struct initialized to 0 by default?
...(0),y(0) { }
// other ctors / functions...
};
Will initialize both x and y to 0. Note that you can use x(), y() to initialize them disregarding of their type: That's then value initialization, and usually yields a proper initial value (0 for int, 0.0 for double, calling the default constructor...
Nested fragments disappear during transition animation
... A , which in turn uses getChildFragmentManager() to add fragments A1 and A2 in its onCreate like so:
16 Answers
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Sorting an ArrayList of objects using a custom sorting order
...urn name.compareTo(other.name);
}
// Add/generate getters/setters and other boilerplate.
}
so that you can just do
List<Contact> contacts = new ArrayList<Contact>();
// Fill it.
Collections.sort(contacts);
If you want to define an external controllable ordering (which ov...
How does a Java HashMap handle different objects with the same hash code?
As per my understanding I think:
14 Answers
14
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SQL Server IN vs. EXISTS Performance
...an overall large result set).
I believe the optimizer is smart enough to convert between "in" vs "exists" when there is a significant cost difference due to (1) and (2), otherwise it may just be used as a hint (e.g. exists to encourage use of an a seekable index on the right side).
Both forms c...
Javascript object Vs JSON
...worth noting that a key in JSON must be enclosed in double quotes.
If I convert the above object to JSON using var jSonString = JSON.stringify(testObject);, what is the difference between the 2 (JS obj and JSON)?
JSON is a data interchange format. It's a standard which describes how ordered lis...
libpng warning: iCCP: known incorrect sRGB profile
...ou can do that with any of a variety of PNG editors such as ImageMagick's
convert in.png out.png
To remove the invalid iCCP chunk from all of the PNG files in a folder (directory), you can use mogrify from ImageMagick:
mogrify *.png
This requires that your ImageMagick was built with libpng16. ...