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OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection
...? there is an app called SayText where this detection happens in real-time from a video stream. This code would be impractical for real-time, am I right?
– alandalusi
Nov 27 '12 at 17:34
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Session variables in ASP.NET MVC
...ject that I created. The problem is that I need this object to be accessed from any part of the website and I don't really know the best way to accomplish this. I know that one solution is to use session variables but I don't know how to use them in asp .net MVC. And where would I declare a session ...
地图组件（高德地图） · App Inventor 2 中文网
...特征的 可见性 属性值）。此列表还包含通过调用 FeatureFromDescription 在 地图 上创建的所有特征点。
高度
设置地图的垂直高度，以像素px为单位。
高度百分比
设置地图的垂直高度相对于整个屏幕高度的百分比。
纬度
获...
How to convert numbers between hexadecimal and decimal
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To convert from decimal to hex do...
string hexValue = decValue.ToString("X");
To convert from hex to decimal do either...
int decValue = int.Parse(hexValue, System.Globalization.NumberStyles.HexNumber);
or
int decValue = Conve...
Xcode 4 says “finished running ” on the targeted device — Nothing happens
...ng to support devices that run armv6 (e.g. the iPhone 3G).
Delete armv7 from the 'Required device capabilities' in yourProjectName-Info.plist
You may also need to change the build settings to compile with armv6 instead of armv7.
This is the default:
Double click on 'Standard (armv7)' to ad...
Remove last character from string. Swift language
How can I remove last character from String variable using Swift? Can't find it in documentation.
22 Answers
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Setting Environment Variables for Node to retrieve
...credentials to your application. USER_ID and USER_KEY can both be accessed from process.env.USER_ID and process.env.USER_KEY respectively. You don't need to edit them, just access their contents.
It looks like they are simply giving you the choice between loading your USER_ID and USER_KEY from eith...
How can I count the number of matches for a regex?
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Solution for Java 8 and older
You'll have to do the following. (Starting from Java 9, there is a nicer solution)
int count = 0;
while (matcher.find())
count++;
Btw, matcher.groupCount() is something completely different.
Complete example:
import java.util.regex.*;
class Test {
public...
How to remove extension from string (only real extension!)
I'm looking for a small function that allows me to remove the extension from a filename.
17 Answers
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Determine function name from within that function (without using traceback)
...sing the traceback module, is there a way to determine a function's name from within that function?
19 Answers
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