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Why are function pointers and data pointers incompatible in C/C++?
...ply making the data types the same size and guaranteeing that assigning to one and then back will result in the same value. They do this with void*, which is the only pointer type compatible with everything.
– Edward Strange
Sep 10 '12 at 20:28
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How to create a WPF Window without a border that can be resized via a grip only?
...osoft.com/winfx/2006/xaml"
Width="640" Height="480"
WindowStyle="None"
AllowsTransparency="True"
ResizeMode="CanResizeWithGrip">
<!-- Content -->
</Window>
Result looks like:
sha...
How do I get a Cron like scheduler in Python? [closed]
...nt. (There are probably some subtleties with daylight savings time / timezones to be wary of though). Here's a quick implementation:
class CronTab(object):
def __init__(self, *events):
self.events = events
def run(self):
t=datetime(*datetime.now().timetuple()[:5])
...
Get an object properties list in Objective-C
...
@orange80's answer has one problem: It actually doesn't always terminate the string with 0s. This can lead to unexpected results like crashing while trying to convert it to UTF8 (I actually had a pretty annoying crashbug just because of that. Was f...
Timeout command on Mac OS X?
...Or ln -s /usr/local/bin/gtimeout /usr/local/bin/timeout to just enable the one command (the alias solution works for interactive CLI use, but not when called from bash scripts).
– John Y
Jan 30 '19 at 10:20
...
Why does SSL handshake give 'Could not generate DH keypair' exception?
...
+1. Everyone who has a Sun Developer Network Account, please vote for this bug.
– Paŭlo Ebermann
Jul 27 '11 at 22:56
...
How to exclude this / current / dot folder from find “type d”
...imited from “top” using the corresponding -mindepth parameter. So what one actually needs is:
find . -mindepth 1 -type d
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How is attr_accessible used in Rails 4?
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Rails 4 now uses strong parameters.
Protecting attributes is now done in the controller. This is an example:
class PeopleController < ApplicationController
def create
Person.create(person_params)
end
private
def person_params
params.require(:person).permit(:name, :age)...
A simple scenario using wait() and notify() in java
...e thread will call wait() again.
As some of the other answers have mentioned, Java 1.5 introduced a new concurrency library (in the java.util.concurrent package) which was designed to provide a higher level abstraction over the wait/notify mechanism. Using these new features, you could rewrite th...
How to extract epoch from LocalDate and LocalDateTime?
...sses LocalDate and LocalDateTime do not contain information about the timezone or time offset, and seconds since epoch would be ambigious without this information. However, the objects have several methods to convert them into date/time objects with timezones by passing a ZoneId instance.
LocalDate...