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Is MonoTouch now banned on the iPhone? [closed]
A recent post by John Gruber notes that the following legalese:
18 Answers
18
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How do I make a Mac Terminal pop-up/alert? Applescript?
...ice, whatever that displays my custom text. How is this done? Also, is it possible to make one with several buttons that sets a variable?
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Why do I get “Pickle - EOFError: Ran out of input” reading an empty file?
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I would check that the file is not empty first:
import os
scores = {} # scores is an empty dict already
if os.path.getsize(target) > 0:
with open(target, "rb") as f:
unpickler = pickle.Unpickler(f)
# if file is not empty scores will be equal
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分布式数据（DistributedData）使用指导 · App Inventor 2 中文网
...说明准备素材、JSON 或系统目标。案例中的按钮代表分步操作，先等初始化、加载或创建成功，再执行下一步。
接住完成事件与错误事件，将原始 JSON 或错误显示在标签。先确认原始结果，再编写业务处理。
先等 StoreOpened 再...
How to make a countdown timer in Android?
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MainActivity.java
package com.zeustechnocrats.countdown;
import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.TextView;
import java.text.SimpleDateFormat;
import j...
Is file append atomic in UNIX?
... granted when we append to a file in UNIX from multiple processes? Is it possible to lose data (one process overwriting the other's changes)? Is it possible for data to get mangled? (For example, each process is appending one line per append to a log file, is it possible that two lines get mangle...
std::string to float or double
...to convert a string to a double.
You can do it with the stringstream or boost::lexical_cast but those come with a performance penalty.
Ahaha you have a Qt project ...
QString winOpacity("0.6");
double temp = winOpacity.toDouble();
Extra note:
If the input data is a const char*, QByteArray::to...
onSaveInstanceState () and onRestoreInstanceState ()
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Usually you restore your state in onCreate(). It is possible to restore it in onRestoreInstanceState() as well, but not very common. (onRestoreInstanceState() is called after onStart(), whereas onCreate() is called before onStart().
Use the put methods to store values in onSav...
How do I rename all files to lowercase?
... user2066039: This must must be a recent thing on the Mac, because most answers older than a year don't account for it. I accomplished the task by using an intermediate extension like 'jpg1'. So, JPG -> jpg1 -> jpg. Hope that helps.
– Joyce
Nov 1 '...
淘宝应对双\"11\"的技术架构分析 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...，从本质上来讲，这就是广义上的异构“表”之间的JOIN操作。那么，谁来负责这个事情呢？很容易想到，在存储层与前端产品之间增加一个中间层，它负责各个异构“表”之间的数据JOIN和UNION等计算，并且隔离前端产品和后端...