大约有 900 项符合查询结果（耗时：0.0110秒） [XML]
PowerShell equivalent to grep -f
...swered Dec 15 '17 at 18:52
cody.tv.webercody.tv.weber
37922 silver badges1111 bronze badges
...
内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
...代品。目前已经在chrome、safari等知名软件中运用。
根据官方测试报告，ptmalloc在一台2.8GHz的P4机器上（对于小对象）执行一次malloc及free大约需要300纳秒。而TCMalloc的版本同样的操作大约只需要50纳秒。
小对象分配
tcmalloc为每...
How to get the width and height of an android.widget.ImageView?
...
final ImageView iv = (ImageView)findViewById(R.id.scaled_image);
final TextView tv = (TextView)findViewById(R.id.size_label);
ViewTreeObserver vto = iv.getViewTreeObserver();
vto.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
public boolean onPreDraw() {
iv.getViewTreeO...
UITableView Setting some cells as “unselectable”
...ot want the row to be selected.
- (NSIndexPath *)tableView:(UITableView *)tv willSelectRowAtIndexPath:(NSIndexPath *)path
{
// Determine if row is selectable based on the NSIndexPath.
if (rowIsSelectable) {
return path;
}
return nil;
}
This prevents the row from being sel...
What's the best way to limit text length of EditText in Android
...
use an input filter to limit the max length of a text view.
TextView editEntryView = new TextView(...);
InputFilter[] filterArray = new InputFilter[1];
filterArray[0] = new InputFilter.LengthFilter(8);
editEntryView.setFilters(filterArray);
...
How to use putExtra() and getExtra() for string data
...
first Screen.java
text=(TextView)findViewById(R.id.tv1);
edit=(EditText)findViewById(R.id.edit);
button=(Button)findViewById(R.id.bt1);
button.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
String s=edit.getTex...
How do I get the current version of my iOS project in code?
...lows:
let version = Bundle.main.object(forInfoDictionaryKey: "CFBundleShortVersionString") as! String
let build = Bundle.main.object(forInfoDictionaryKey: kCFBundleVersionKey as String) as! String
or in Objective-C
NSString * version = [[NSBundle mainBundle] objectForInfoDictionaryKey: @"CFBundl...
Different font size of strings in the same TextView
I have a textView inside with a number (variable) and a string , how can I give the number one size larger than the string ?
the code:
...
Arduino 101 实验09 - PWM 电机调速 · App Inventor 2 中文网
... 实验02：LED 调光（PWM 原理一样）
改编自 MIT 官方教程 App Inventor + IoT: PWM Motor。
完成品工程：Arduino101PWMMotor.aia
一、器材清单
器材
数量
说明
Arduino 101
1
...
Android : Check whether the phone is dual SIM
...t android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
...