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App Inventor 2 DynamicComponents 拓展：动态创建AI2组件对象 · App Inventor 2 中文网
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DynamicComponents 拓展
.aix 拓展下载（最新版 v2.3.0）：
com.yusufcihan.DynamicComponents.aix
完全支持 App Inventor 2 的动态组件扩展。它基于 Java 的反射功能，因此只需键入类名称即可搜索类来创建组件。因此，它对特...
千万别惹程序员 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
...: @全球经典音乐: @环球汽车搜罗: @怪诞心理行为学: @精彩电影: @互联网的那点事: @潮混搭: @热门微博: @SinaAppEngine: ” 还有些什么体育记者，法律记者都转了， 这些转发了。这多少让我觉得有些诧异，这是很技术的一件事啊，怎...
Execution time of C program
...
You functionally want this:
#include <sys/time.h>
struct timeval tv1, tv2;
gettimeofday(&tv1, NULL);
/* stuff to do! */
gettimeofday(&tv2, NULL);
printf ("Total time = %f seconds\n",
(double) (tv2.tv_usec - tv1.tv_usec) / 1000000 +
(double) (tv2.tv_sec - tv1.tv_s...
How to Calculate Execution Time of a Code Snippet in C++
...cond (10^-3) intervals */
return ret;
#else
/* Linux */
struct timeval tv;
gettimeofday(&tv, NULL);
uint64 ret = tv.tv_usec;
/* Convert from micro seconds (10^-6) to milliseconds (10^-3) */
ret /= 1000;
/* Adds the seconds (10^0) after converting them to milliseconds (10^-3) */
ret ...
TDD/BDD screencast/video resources [closed]
...25 minutes long and new episodes are released a couple per week (as of Sep 2012 there are over 260 episodes, over 130 hours).
Let's Play: Test-Driven Development is a screencast series where James Shore is using TDD in developing a small application. The current project is an application for estima...
Is there an alternative sleep function in C to milliseconds?
...on. It is defined as follows:
struct timespec {
time_t tv_sec; /* seconds */
long tv_nsec; /* nanoseconds */
};
An example msleep() function implemented using nanosleep(), continuing the sleep if it is interrupted by a signal:
#include <tim...
Broadcast receiver for checking internet connection in android app
...on;
import android.view.animation.AnimationUtils;
import android.widget.TextView;
import com.keshav.networkchangereceiverexample.receivers.NetworkChangeReceiver;
public class MainActivity extends AppCompatActivity {
private BroadcastReceiver mNetworkReceiver;
static TextView tv_check_conn...
Converting a view to Bitmap without displaying it in Android?
...Try this,
/**
* Draw the view into a bitmap.
*/
public static Bitmap getViewBitmap(View v) {
v.clearFocus();
v.setPressed(false);
boolean willNotCache = v.willNotCacheDrawing();
v.setWillNotCacheDrawing(false);
// Reset the drawing cache background color to fully transparen...
iOS: Convert UTC NSDate to local Timezone
....
This is where I got my answer from:
https://agilewarrior.wordpress.com/2012/06/27/how-to-convert-nsdate-to-different-time-zones/
@implementation NSDate(Utils)
-(NSDate *) toLocalTime
{
NSTimeZone *tz = [NSTimeZone defaultTimeZone];
NSInteger seconds = [tz secondsFromGMTForDate: self];
r...
iPhone: How to get current milliseconds?
...t;
struct timeval time;
gettimeofday(&time, NULL);
long millis = (time.tv_sec * 1000) + (time.tv_usec / 1000);
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