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How do I split a multi-line string into multiple lines?
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@lpapp, I totally agree. splitlines() is semantically (and functionally, since it uses universal newlines and omits a trailing empty line) better than split('\n'). Back then (2008) I was just a newbie Pythonista and grepping though my scripts now shows that I too am using splitli...
How does a public key verify a signature?
...m trying to get a better grapple on how public/private keys work. I understand that a sender may add a digital signature to a document using his/her private key to essentially obtain a hash of the document, but what I do not understand is how the public key can be used to verify that signature.
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Mysql command not found in OS X 10.7
...r/mysql/private/var/mysql/bin.
$PATH is where the shell searches for command files. Folders to search in need to be separated with a colon. And so you want /usr/local/mysql/bin/ in your path but instead it searches in /usr/local//usr/local/mysql/bin/private/var/mysql/private/var/mysql/bin, which p...
Best way to detect that HTML5 is not supported
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@2astalavista The double negative (!!) is like casting. It turns a truey or falsey statement into a boolean. For example: var i = 0. i evaluates to false, but typeof i returns "number". typeof !!i returns "boolean".
– User2
Jun 12 '1...
Pinging servers in Python
In Python, is there a way to ping a server through ICMP and return TRUE if the server responds, or FALSE if there is no response?
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Redirecting to URL in Flask
I'm new to Python and Flask and I'm trying to do the equivalent of Response.redirect as in C# - ie: redirect to a specific URL - how do I go about this?
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In-place edits with sed on OS X
I'd like edit a file with sed on OS X. I'm using the following command:
6 Answers
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BLE UUID是对的但连接闪退：java.lang.IllegalArgumentException: UUID str...
...ntor.ble.BluetoothLEint$BLEReadOperation.run(BluetoothLEint.java:325)
at android.os.Handler.handleCallback(Handler.java:958)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:224)
at android.os.Looper.loop(Looper.java:318)
at android.app.Activ...
Why is Dictionary preferred over Hashtable in C#?
... because you can't insert any random object into it, and you don't have to cast the values you take out.
Interestingly, the Dictionary<TKey, TValue> implementation in the .NET Framework is based on the Hashtable, as you can tell from this comment in its source code:
The generic Dictionary...
Using Caps Lock as Esc in Mac OS X
...he System Preferences, choose Keyboard, then the Keyboard Tab (first tab), and click Modifier Keys:
In the popup dialog set Caps Lock Key to No Action:
2) Now, click here to download Seil and install it:
3) After the installation you will have a new Application installed ( Mountain Lion an...