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How to crop an image in OpenCV using Python
...Suppose you load N images each is >1MP and you need only 100x100 region from the upper left corner.
Slicing:
X = []
for i in range(N):
im = imread('image_i')
X.append(im[0:100,0:100]) # This will keep all N images in the memory.
# Because they are still u...
spring boot default H2 jdbc connection (and H2 console)
...
From http://docs.spring.io/spring-boot/docs/current/reference/html/common-application-properties.html
H2 Web Console (H2ConsoleProperties):
spring.h2.console.enabled=true //Enable the console.
spring.h2.console.path=/h2-co...
Delete/Reset all entries in Core Data?
...tten a clearStores method that goes through every store and delete it both from the coordinator and the filesystem (error handling left aside):
NSArray *stores = [persistentStoreCoordinator persistentStores];
for(NSPersistentStore *store in stores) {
[persistentStoreCoordinator removePersisten...
snprintf and Visual Studio 2010
... -1, Microsoft's _snprintf is an unsafe function which behaves differently from snprintf (it doesn't necessarily add a null terminator), so the advice given in this answer is misleading and dangerous.
– interjay
Jun 4 '13 at 9:31
...
Convert absolute path into relative path given a current directory using Bash
...
Using realpath from GNU coreutils 8.23 is the simplest, I think:
$ realpath --relative-to="$file1" "$file2"
For example:
$ realpath --relative-to=/usr/bin/nmap /tmp/testing
../../../tmp/testing
...
Spring MVC: Complex object as GET @RequestParam
...
I will add some short example from me.
The DTO class:
public class SearchDTO {
private Long id[];
public Long[] getId() {
return id;
}
public void setId(Long[] id) {
this.id = id;
}
// reflection toString from a...
CodeIgniter - accessing $config variable in view
...ften I need to access $config variables in views.
I know I can pass them from controller to load->view() .
But it seems excessive to do it explicitly.
...
NSNotificationCenter addObserver in Swift
...idChangeNotification,
object: nil)
If your observer does not inherit from an Objective-C object, you must prefix your method with @objc in order to use it as a selector.
@objc private func batteryLevelChanged(notification: NSNotification){
//do stuff using the userInfo property of th...
将 App Inventor 2 项目连接到外部传感器 · App Inventor 2 中文网
...services such as sending and receiving SMS messages or reading information from the web. The focus of this effort was to extend AppInventor’s toolset into the physical space, allowing users to easily interface with external sensors, actuators, and other hardware.
The MOIO board[1] is a low-cost, ...
How can I split a string with a string delimiter? [duplicate]
...ions.Regex("is Marco and");
var array = rx.Split("My name is Marco and I'm from Italy");
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