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Why 0 is true but false is 1 in the shell?
...orks have a similar convention - functions that succeed return 0 and and those that fail give back an error code describing the particular failure case.
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windows service vs scheduled task
What are the cons and pros of windows services vs scheduled tasks for running a program repeatedly (e.g. every two minutes)?
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Fragment or Support Fragment?
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So what's the purpose of the android.app.Fragment then? If you can add this to your answer here with a bit more explanation, I would be fully satisfied. Thanks!
– jonstaff
Jul 10 '13 at 12:47
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iPhone App Minus App Store?
...I have personally tested using the AccelerometerGraph sample app on iPhone OS 3.0.
Create Self-Signed Certificate
First you'll need to create a self signed certificate and patch your iPhone SDK to allow the use of this certificate:
Launch Keychain Access.app. With no items selected, from the Key...
When to use AtomicReference in Java?
...reference, for which monitor-based synchronization is not appropriate. Suppose you want to check to see if a specific field only if the state of the object remains as you last checked:
AtomicReference<Object> cache = new AtomicReference<Object>();
Object cachedValue = new Object();
cac...
【教学】AppInventor2人工智能应用：Personal Image Classifier (PIC) Tool...
...複的訓練流程建立好一個網頁，您可用電腦或手機(手機操作會比較辛苦，因為還沒針對行動裝置調整版面) 開啟[color=var(--fs-experimental-link-color)]這個網頁 （https://classifier.appinventor.mit.edu/）就可以進行操作。這確實呼應了咱們的新...
远程临场机器人 你会买单吗？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...米内。2006年，MIT实验室把它做成通过网络控制，这时候操作距离可以拉得更远。
2014年3月，在温哥华举行的TED大会上，美国“棱镜门”爆料者斯诺登“现身”。当时正被美国政府通缉的斯诺登不可能亲临现场，他本人就是在俄...
海量数据相似度计算之simhash和海明距离 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
海量数据相似度计算之simhash和海明距离通过采集系统我们采集了大量文本数据，但是文本中有很多重复数据影响我们对于结果的分析。分析前我们需要对这些数据去除重复，如何选择和设 通过 采集系统 我们采集了大量文本数...
Running multiple AsyncTasks at the same time — not possible?
... the stuff from doInBackground(). The issue is initially (in early Android OS versions) the pool size was just 1, meaning no parallel computations for a bunch of AsyncTasks. But later they fixed that and now the size is 5, so at most 5 AsyncTasks can run simultaneously. Unfortunately I don't remembe...
How do I choose between Semaphore and SemaphoreSlim?
... system-wide. This would mean that a SemaphoreSlim could not be used for cross-process synchronization.
The MSDN documentation also indicates that SemSlim should be used when "wait times are expected to be very short". That would usually dovetail nicely with the idea that the slim version is more l...