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How do I handle the window close event in Tkinter?
...opping this activity with destroy() -- even by using protocol(), a button, etc. -- will disturb this activity ("while executing" error) rather than just terminate it. The best solution in almost every case is to use a flag. Here is a simple, silly example of how to use it (although I am certain that...
What's the difference between ContentControl and ContentPresenter?
...8 SDK:
<ContentControl x:Name="contentControl" HorizontalAlignment="Stretch" HorizontalContentAlignment="Stretch" VerticalAlignment="Stretch" VerticalContentAlignment="Stretch">
<ContentPresenter x:Name="contentPresenter" CacheMode="BitmapCache"/>
</ContentControl>
Here you ...
What is the difference between named and positional parameters in Dart?
...languages, called positional because "it's the first parameter, or second, etc". Named parameters are called like that because you can actually identify them by name and not by position (if you switch the position of two named params, it doesn't matter). See the answer above from Savaranaraja
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Payment Processors - What do I need to know if I want to accept credit cards on my website? [closed]
...g trails. use logs for access to the server room, use cameras if you can, etc... Another measure is to encrypt the credit card information in the database. This makes sure that the data can only be viewed in your application where you can enforce who sees the information.
I use pfsense for my fi...
服务器保持大量TIME_WAIT和CLOSE_WAIT的解决方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...收和重用那些TIME_WAIT的资源。
下面来看一下我们网管对/etc/sysctl.conf文件的修改：
#对于一个新建连接，内核要发送多少个 SYN 连接请求才决定放弃,不应该大于255，默认值是5，对应于180秒左右时间
net.ipv4.tcp_syn_retries=2
#net.ip...
Why does C++ need a separate header file?
...g the code between different units (different developers, teams, companies etc..)
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Setting global styles for Views in Android
...style for various widgets. The key is the textViewStyle (or editTextStyle, etc.) attribute which you override in your custom theme. You can override these in the following way:
Create a styles.xml:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="MyTheme" parent="andr...
Is it possible to decrypt MD5 hashes?
...change their password (with extra checking if you have a security question/etc) and then the new password is hashed and replaced with old password in database
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What are the minimum margins most printers can handle?
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@GabrielStaples: On Linux you can find the files in /etc/cups/ppd. In the PPD spec the dimensions are described as lower left and upper right "ll.x ll.y ur.x ur.y".
– Derek Veit
Jul 25 '18 at 14:40
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foldl versus foldr behavior with infinite lists
...step False 1) 2) [3..]
foldl step (step (step (step False 1) 2) 3) [4..]
etc.
Intuitively, foldl is always on the "outside" or on the "left" so it gets expanded first. Ad infinitum.
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