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How to initialize a dict with keys from a list and empty value in Python?

... dict.fromkeys([1, 2, 3, 4]) This is actually a classmethod, so it works for dict-subclasses (like collections.defaultdict) as well. The optional second argument specifies the value to use for the keys (defaults to None.) ...
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Get first n characters of a string

...ngths on trimmed and untrimmed strings): $string = (strlen($string) > 13) ? substr($string,0,10).'...' : $string; So you will get a string of max 13 characters; either 13 (or less) normal characters or 10 characters followed by '...' Update 2: Or as function: function truncate($string, $len...
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setting multiple column using one update

... 344 Just add parameters, split by comma: UPDATE tablename SET column1 = "value1", column2 = "val...
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Change the font of a UIBarButtonItem

... forState:(UIControlState)state but this is for iOS5 only. For iOS 3/4, you will have to use a custom view. share | improve this answer | follow | ...
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Can someone explain collection_select to me in clear, simple terms?

... 306 collection_select( :post, # field namespace :author_id, # field name # result of ...
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Difference between adjustResize and adjustPan in android?

... 243 From the Android Developer Site link "adjustResize" The activity's main window is always resize...
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CharSequence VS String in Java?

... 344 Strings are CharSequences, so you can just use Strings and not worry. Android is merely trying...
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Remove leading or trailing spaces in an entire column of data

... 133 If you would like to use a formula, the TRIM function will do exactly what you're looking for: ...
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How does “304 Not Modified” work exactly?

...he If-Modified-Since or If-None-Match header, telling the server to send a 304 if the content still has that date or ETag. The server needs some way of calculating a date-modified or ETag for each version of each resource; this typically comes from the filesystem or a separate database column. ...
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How to parse the AndroidManifest.xml file inside an .apk package

...est.xml – Ehtesh Choudhury Apr 25 '13 at 0:09 minSdkVersion and other version parameters can also be found in Gmail/ap...