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Read file from line 2 or skip header row
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with open(fname) as f:
next(f)
for line in f:
#do something
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How do I check to see if a value is an integer in MySQL?
...s the REGEXP operator, matching the string to a regular expression. Simply do
select field from table where field REGEXP '^-?[0-9]+$';
this is reasonably fast. If your field is numeric, just test for
ceil(field) = field
instead.
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How to join (merge) data frames (inner, outer, left, right)
...or a whole host of complex queries against dataframes, really needed it to do a self-cross join (ie data.frame cross-joining itself) I wonder how it compares from a performance perspective....???
– Nicholas Hamilton
Feb 12 '13 at 4:42
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ng-repeat finish event
... if all you want is to style/add events to the whole of the table, you can do so using in a directive that encompasses all the ngRepeat elements. On the other hand, if you want to address each element specifically, you can use a directive within the ngRepeat, and it will act on each element, after i...
How do you reference a capture group with regex find and replace in Visual Studio 2012, 2013, 2015,
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To find and replace in VS 2012 and VS 2015 you do the following:
Surround with (), display capture with $1, $2, $n
Example (thanks to syonip)
In the find options, make sure 'use regular expressions' is checked, and put the following as the text to find:
_platformAct...
How do I center align horizontal menu?
...'m sorry to ask this after such a long time, but what if I have a css drop down? I can't use overflow:hidden in the parent then. But it'll still overflow like here: homeafrika.com .
– Samia Ruponti
Mar 28 '12 at 18:26
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How do I access command line arguments in Python?
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What does [1:] mean?
– Kolob Canyon
May 1 '18 at 15:04
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Delete a key from a MongoDB document using Mongoose
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In early versions, you would have needed to drop down the node-mongodb-native driver. Each model has a collection object that contains all the methods that node-mongodb-native offers. So you can do the action in question by this:
User.collection.update({_id: user._id}, {$u...
List all environment variables from the command line
Is it possible to list all environment variables from a Windows' command prompt?
8 Answers
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REST API 404: Bad URI, or Missing Resource?
... you return a 200 with a null you are going against the HTTP Spec. You can do this, but then your api will not adhere to the "Uniformed Interface" Constraint of REST.
– suing
Mar 29 '12 at 20:20
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