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How to crop an image in OpenCV using Python
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Alternatively, if you have defined a crop margin, you can do crop_img = img[margin:-margin, margin:-margin]
– Rufus
Aug 28 '18 at 2:35
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Should I index a bit field in SQL Server?
... integer column, SQL's index contains a set of rows for each index value. If you have a range of 1 to 10, then you would have 10 index pointers. Depending on how many rows there are this can be paged differently. If your query looks for the index matching "1" and then where Name contains "Fred" (...
Java Delegates?
...);
This should probably only be used when the implementation is very specific to the current context and wouldn't benefit from being reused.
And then of course in Java 8, these do become basically lambda expressions:
// Java 8
SomeMethod(() -> { /* your implementation */ });
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How do I run two commands in one line in Windows CMD?
...all Microsoft OSes since 2000, and still good today:
dir & echo foo
If you want the second command to execute only if the first exited successfully:
dir && echo foo
The single ampersand (&) syntax to execute multiple commands on one line goes back to Windows XP, Windows 2000, a...
数据存储组件 · App Inventor 2 中文网
...应用程序特定目录不存在，则创建该目录。
ASD(app specific directory)相关知识请参考《Android存储系统基础知识：内部存储，外部存储，App特定目录ASD 及 getASD代码实现》。
创建一个目录。它用布尔值 true 或 false 触发...
How do I get Flask to run on port 80?
...rowing up that error message because you have apache2 running on port 80.
If this is for development, I would just leave it as it is on port 5000.
If it's for production either:
Not Recommended
Stop apache2 first;
Not recommended as it states in the documentation:
You can use the builtin...
How to uncheck checkbox using jQuery Uniform library
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Looking at their docs, they have a $.uniform.update feature to refresh a "uniformed" element.
Example: http://jsfiddle.net/r87NH/4/
$("input:checkbox").uniform();
$("body").on("click", "#check1", function () {
var two = $("#check2").attr("checked", this.che...
printf with std::string?
...rloading:
std::cout << "Follow this command: " << myString;
If, for some reason, you need to extract the C-style string, you can use the c_str() method of std::string to get a const char * that is null-terminated. Using your example:
#include <iostream>
#include <string>
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Request is not available in this context
...implementation of the
Application_Start method in the
global.asax file if you attempt to
access the HttpContext of the request
that started the application.
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Is it safe to assume a GUID will always be unique?
I know there is a minute possibility of a clash but if I generated a batch of 1000 GUIDs (for example), would it be safe to assume they're all unique to save testing each one?
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