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Returning IEnumerable vs. IQueryable
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The top answer is good but it doesn't mention expression trees which explain "how" the two interfaces differ. Basically, there are two identical sets of LINQ extensions. Where(), Sum(), Count(), FirstOrDefault(), etc all have two...
No suitable application records were found
...dd to this that once your app is ready, there will be a blue button in the top-right of the app screen that says "Ready for Upload" - I'd never seen that there before! So I clicked on it, clicked yes to all the legal stuff and boom, "Prepare for upload" changed to "Waiting for upload". All is now ri...
Where is my Django installation?
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The current top answer doesn't work, at least on linux.
From the Django tutorial:
If you have difficulty finding where the Django source files are
located on your system, run the following command:
python -c "
import sys
sys.pat...
Autoresizing masks programmatically vs Interface Builder / xib / nib
...esizingFlexibleRightMargin | \
UIViewAutoresizingFlexibleTopMargin
Using UIViewAutoresizingFlexibleMargins will make a UI Element stay centered since it will NOT be hugging any one side. To make the element grow / shrink with its parent, set the UIViewAutoresizingFlexibleWidth a...
CSS display: inline vs inline-block [duplicate]
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Inline elements:
respect left & right margins and padding, but not top & bottom
cannot have a width and height set
allow other elements to sit to their left and right.
see very important side notes on this here.
Block elements:
respect all of those
force a line break after the block el...
Chrome >=24 - how to dock devtools to the right?
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If you click and hold on the icon in the top right next to the close icon (Undock into separate window button), you are given the option to dock it to the right. See screenshot:
Starting in Chrome 41, you are able to use Ctrl + Shift + D (Windows/Linux) or Comman...
Generating a Random Number between 1 and 10 Java [duplicate]
...rand = new Random();
// nextInt as provided by Random is exclusive of the top value so you need to add 1
int randomNum = rand.nextInt((max - min) + 1) + min;
See the relevant JavaDoc.
As explained by Aurund, Random objects created within a short time of each other will tend to produce similar ...
mfc 画圆角矩形 - C/C++ - 清泛网 - 专注C/C++及内核技术
...or();
HRGN hrgnFrame = ::CreateRoundRectRgn( lprcRect->left, lprcRect->top, lprcRect->right + 1, lprcRect->bottom + 1, sizeRound.cx, sizeRound.cy );
if ( COLOR_TRANSPARENT == dwColorFrame && COLOR_TRANSPARENT != dwColorFill )
{
// fill it only
CBrush brushFill( dwColorFill );
...
stack,deque,queue对比 - C/C++ - 清泛网 - 专注C/C++及内核技术
...eue对比stack堆栈，没有迭代器，支持push()方法。后进先出,top()返回最顶端的元素,pop()剔除最顶元素deque双端队列，支持迭代器，有push_back()方...stack：栈，没有迭代器，支持push()方法。后进先出,top()返回最顶端的元素,pop()剔除最顶...
Android RoundRectShape圆角矩形使用详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...8 radius values, for the outer roundrect. The first two floats are for the top-left corner (remaining pairs correspond clockwise). For no rounded corners on the outer rectangle, pass null.
//一个包含8个弧度值，指定外部圆角矩形的 4个角部的弧度及 ：new float[] {l, l, t, t, r...