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Calculating how many minutes there are between two times
I have a datagridview in my application which holds start and finish times. I want to calculate the number of minutes between these two times. So far I have got:
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How do I tell matplotlib that I am done with a plot?
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There is a clear figure command, and it should do it for you:
plt.clf()
If you have multiple subplots in the same figure
plt.cla()
clears the current axes.
share
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In Python script, how do I set PYTHONPATH?
I know how to set it in my /etc/profile and in my environment variables.
6 Answers
6
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Android Activity as a dialog
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To start activity as dialog I defined it like this in AndroidManifest.xml:
<activity android:theme="@android:style/Theme.Dialog" />
Use this property inside your activity tag to avoid that your Dialog appears in the recently used apps list
android:excludeFromRecents="...
使用App Inventor 2 控制物联网设备/低功耗蓝牙设备(BLE) · App Inventor 2 中文网
...块并将其拖放到基于 Web 浏览器的平台上即可创建自己的 Android 移动应用程序 [2]。 这种简单易用的编程界面支持超过 450 万用户，使每个人（即使是没有任何编程经验的人）都能够快速创建自己的移动应用程序。 与传统的Android...
System.Net.WebException HTTP status code
.... See the comment in the example on this MSDN page
– Andras Toth
May 20 '14 at 15:19
5
@AndrasTot...
Convert INT to VARCHAR SQL
I am using Sybase and I am doing a select which returns me a column called "iftype", but its type is int and I need to convert into varchar. When I try to do the select without the convert function I get this error:
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How to run a C# console application with the console hidden
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It did not work for invoking a command line tool. Used yourprocess.StartInfo.CreateNoWindow=true; instead, see below.
– Christian
Apr 20 '14 at 23:05
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How do I convert an array object to a string in PowerShell?
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$a = 'This', 'Is', 'a', 'cat'
Using double quotes (and optionally use the separator $ofs)
# This Is a cat
"$a"
# This-Is-a-cat
$ofs = '-' # after this all casts work this way until $ofs changes!
"$a"
Using operator join
# This-Is-a-cat
$a -join '-'
# ThisIsacat
-join $a...
Tree data structure in C#
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My best advice would be that there is no standard tree data structure because there are so many ways you could implement it that it would be impossible to cover all bases with one solution. The more specific a solution, the less likely it is applicable to any given p...