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Find the number of columns in a table

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Response Content type as CSV

I need to send a CSV file in HTTP response. How can I set the output response as CSV format? 11 Answers ...
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find all unchecked checkbox in jquery

...checkboxes. Since I want to know what value I'm passing to the database I set these to off, since the checkboxes give me a value of on. //looking for unchecked checkboxes, but don’t include the checkbox all that checks or unchecks all checkboxes //.map - Pass each element in the current matched ...
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How does the Google “Did you mean?” Algorithm work?

...nsists of two steps, preparation and word checking. Step 1: Preparation - setting up the word database Best is if you can use actual search words and their occurence. If you don't have that a large set of text can be used instead. Count the occurrence (popularity) of each word. Step 2. Word check...
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Convert SVG image to PNG with PHP

...a dynamically generated map of the US coloring different states based on a set of data. 8 Answers ...
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Default height for section header in UITableView

I want to set the height of the first header in my UITableView. For the other headers I want them to remain the default height. What value/constant can I put in place of "someDefaultHeight" in the code below? ...
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Excluding directory when creating a .tar.gz file

I have a /public_html/ folder, in that folder there's a /tmp/ folder that has like 70gb of files I don't really need. 1...
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How do I get a UTC Timestamp in JavaScript?

...that way use the local timezone, making the constructed date incorrect. To set the timezone of a certain date object is to construct it from a date string that includes the timezone. (I had problems getting that to work in an older Android browser.) Note that getTime() returns milliseconds, not plai...
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RVM is not a function, selecting rubies with 'rvm use …' will not work

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How are feature_importances in RandomForestClassifier determined?

...erion that you use (e.g. Gini, Entropy, MSE, ...). Its the impurity of the set of examples that gets routed to the internal node minus the sum of the impurities of the two partitions created by the split. Its important that these values are relative to a specific dataset (both error reduction and t...