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Allowed characters in filename [closed]

Where can I find a list of allowed characters in filenames, depending on the operating system? (e.g. on Linux, the character : is allowed in filenames, but not on Windows) ...
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How can I round up the time to the nearest X minutes?

Is there a simple function for rounding UP a DateTime to the nearest 15 minutes? 13 Answers ...
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How to search DOM elements using XPath or CSS selectors in Chrome Developer Tools?

...ction accepts a second optional argument, context. $x(xpath, context) This allows you to select a particular iframe content, for example, and run an xpath query against it. So for the first iframe: myframe = document.getElementsByTagName("iframe")[0].contentWindow.document.body; #to xpath query that...
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How to test multiple variables against a value?

...lish sentence and guess that you are talking about the same comparison for all names here. You are looking for: if x == 1 or y == 1 or z == 1: x and y are otherwise evaluated on their own (False if 0, True otherwise). You can shorten that using a containment test against a tuple: if 1 in (x, y,...
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How to center icon and text in a android button with width set to “fill parent”

... has an envelope for an email icon and a couple of different phones for a call button. – GLee Nov 4 '13 at 17:30 ...
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calculating the difference in months between two dates

...or is it more related to an actual span of time? The logic for determining all of these rules is non-trivial, so you'll have to determine your own and implement the appropriate algorithm. If all you want is simply a difference in the months--completely disregarding the date values--then you can use...
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Is it possible to use 'else' in a list comprehension? [duplicate]

..., 2, 3] So for your example, table = ''.join(chr(index) if index in ords_to_keep else replace_with for index in xrange(15)) share | improve this answer | ...
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Ask for User Permission to Receive UILocalNotifications in iOS 8

...serNotificationCategory() notificationCategory.identifier = "INVITE_CATEGORY" notificationCategory.setActions([replyAction], forContext: UIUserNotificationActionContext.Default) //registerting for the notification. application.registerUserNotificationSettings(UIUserN...
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importing pyspark in python shell

... If it prints such error: ImportError: No module named py4j.java_gateway Please add $SPARK_HOME/python/build to PYTHONPATH: export SPARK_HOME=/Users/pzhang/apps/spark-1.1.0-bin-hadoop2.4 export PYTHONPATH=$SPARK_HOME/python:$SPARK_HOME/python/build:$PYTHONPATH ...
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How do I strip non alphanumeric characters from a string and keep spaces?

I want to create a regex that removes all non-alphanumber characters but keeps spaces. This is to clean search input before it hits the db. Here's what I have so far: ...