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Take screenshots in the iOS simulator
...://medium.com/@hollanderbart/new-features-in-xcode-8-2-simulator-fc64a4014a5f#.bzuaf5gp0
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How to negate a method reference predicate
...ring> p1 = s -> s.isEmpty();
Function<String, Boolean> f1 = String::isEmpty;
Object obj2 = p1;
Function<String, Boolean> f2 = (Function<String, Boolean>) obj2;
Function<String, Boolean> f3 = p1::test;
Predicate<Integer> p2 = s ->...
2 column div layout: right column with fixed width, left fluid
...lt;/ul>
</div>
#container {
width: 100%;
background: #f1f2ea url(background.gif) repeat-y right;
float: left;
margin-right: -200px;
}
#content {
background: #f1f2ea;
margin-right: 200px;
}
#sidebar {
width: 200px;
float: right;
...
Passing functions with arguments to another function in Python?
..._1y = quadf( y, lambda y: f( -1, y ))
f0y = quadf( y, lambda y: f( 0, y ))
f1y = quadf( y, lambda y: f( 1, y ))
fyx = parabola( x, f_1y, f0y, f1y )
As far as I know, partial can't do this --
quadf( y, partial( f, x=1 ))
TypeError: f() got multiple values for keyword argument 'x'
(How to add tag...
How are virtual functions and vtable implemented?
...ut that's what I've generally observed.
class A {
public:
virtual int f1() = 0;
};
class B : public A {
public:
virtual int f1() { return 1; }
virtual int f2() { return 2; }
};
class C : public A {
public:
virtual int f1() { return -1; }
virtual int f2() { return -2; }
};
A *x = ne...
Android ImageView Zoom-in and Zoom-Out
...oldDist);
if (oldDist > 5f) {
savedMatrix.set(matrix);
midPoint(mid, event);
mode = ZOOM;
...
Reading a UTF8 CSV file with Python
...1200IS) - Vert"""
# a) read from a file
print 'reading from a file:'
for (f1, f2, f3) in csv.reader(open('da.csv'), dialect=csv.excel):
print (f1, f2, f3)
# b) read from a string(unicode) variable
print 'reading from a list of strings:'
reader = csv.reader(data.split('\n'), dialect=csv.excel)
...
CSS Display an Image Resized and Cropped
...ge. .crop img height and width will scale the image. .crop img margin will pan the image
– Frederik
Apr 25 '12 at 13:59
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Pretty printing XML in Python
...
minidom is widely panned as a pretty bad xml implementation. If you allow yourself to add external depenencies, lxml is far superior.
– bukzor
Apr 20 '12 at 16:34
...
内存调试技巧：C 语言最大难点揭秘 - C/C++ - 清泛网 - 专注C/C++及内核技术
...：
清单 1. 简单的潜在堆内存丢失和缓冲区覆盖
void f1(char *explanation)
{
char p1;
p1 = malloc(100);
(void) sprintf(p1,
"The f1 error occurred because of '%s'.",
explanation);
l...