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How do I apply a perspective transform to a UIView?
...eTransform = CATransform3DRotate(rotationAndPerspectiveTransform, 45.0f * M_PI / 180.0f, 0.0f, 1.0f, 0.0f);
layer.transform = rotationAndPerspectiveTransform;
Swift 5.0
if let myView = self.subviews.first {
let layer = myView.layer
var rotationAndPerspectiveTransform = CATransform3DIdenti...
Default function arguments in Rust
...fn add(a: Option<i32>, b: Option<i32>) -> i32 {
a.unwrap_or(1) + b.unwrap_or(2)
}
This accomplishes the objective of having the default value and the function coded only once (instead of in every call), but is of course a whole lot more to type out. The function call will look ...
How Pony (ORM) does its tricks?
... if c.country == 'USA')
>>> import dis
>>> dis.dis(gen.gi_frame.f_code)
1 0 LOAD_FAST 0 (.0)
>> 3 FOR_ITER 26 (to 32)
6 STORE_FAST 1 (c)
9 LOAD_FAST 1 (c)
...
Add days to JavaScript Date
... for Date: var result = new Date(date);, see http://www.w3schools.com/js/js_dates.asp. Even if this usually work, sometimes can lead to wrong results because of conversion to string and vice versa. It should be var result = new Date(date.getTime());
– Marcin
No...
How do I disable the security certificate check in Python requests
...import requests
from urllib3.exceptions import InsecureRequestWarning
old_merge_environment_settings = requests.Session.merge_environment_settings
@contextlib.contextmanager
def no_ssl_verification():
opened_adapters = set()
def merge_environment_settings(self, url, proxies, stream, veri...
Is there an easy way to add a border to the top and bottom of an Android View?
...move the solid if you don't want a fill. The set background="@drawable/your_shape_drawable" on your layout/view.
Option 2: Background View
Here's a little trick I've used in a RelativeLayout. Basically you have a black square under the view you want to give a border, and then give that view some p...
Maximum Length of Command Line String
...
@LordTorgamus, The 32k limit is due to the UNICODE_STRING structure (ushort length). According to Raymond Chen's article on the subject CMD limits lines to 8192 characters (I'd assume the carrage return is the final character) and ShellExecuteEx limits to "INTERNET_MAX_URL_L...
Different floating point result with optimization enabled - compiler bug?
...e all pertinent intermediate computations
into variables.
In x86_64 builds compilers use SSE registers for float and double by default, so that no extended precision is used and this issue doesn't occur.
gcc compiler option -mfpmath controls that.
...
Build vs new in Rails 3
...
You're misreading the docs slightly. some_firm.client.new is creating a new Client object from the clients collection, and so it can automatically set the firm_id to some_firm.id, whereas the docs are calling Client.new which has no knowledge of any Firm's id at all...
scala vs java, performance and memory? [closed]
...he most compact way to do the same thing is:
val bigEnough = array.filter(_.length > 2).flatMap(mapping.get)
Easy! But, unless you're fairly familiar with how the collections work, what you might not realize is that this way of doing this created an extra intermediate array (with filter), and...