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Convert number strings with commas in pandas DataFrame to float
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If you're reading in from csv then you can use the thousands arg:
df.read_csv('foo.tsv', sep='\t', thousands=',')
This method is likely to be more efficient than performing the operation as a separate step.
You need to ...
What Are the Differences Between PSR-0 and PSR-4?
...utoloading to namespacing. However, I can't seem to grasp what the actual difference is between PSR-0 and PSR-4.
5 Answers
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CMake link to external library
... of a link-directory. Something like:
# Your-external "mylib", add GLOBAL if the imported library is located in directories above the current.
add_library( mylib SHARED IMPORTED )
# You can define two import-locations: one for debug and one for release.
set_target_properties( mylib PROPERTIES IMPOR...
MySQL: Insert record if not exists in table
...Rupert | Somewhere | 022 |
+----+--------+-----------+------+
Insert a different record:
INSERT INTO table_listnames (name, address, tele)
SELECT * FROM (SELECT 'John', 'Doe', '022') AS tmp
WHERE NOT EXISTS (
SELECT name FROM table_listnames WHERE name = 'John'
) LIMIT 1;
Query OK, 1 row af...
Detect iPad users using jQuery?
Is there a way to detect if the current user is using an iPad using jQuery/JavaScript?
4 Answers
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Create a list from two object lists with linq
...l return a List in which the two lists are merged and doubles are removed. If you don't specify a comparer in the Union extension method like in my example, it will use the default Equals and GetHashCode methods in your Person class. If you for example want to compare persons by comparing their Name...
One class per file rule in .NET? [closed]
...follow this rule but some of my colleagues disagree with it and argue that if a class is smaller it can be left in the same file with other class(es).
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Can you resolve an angularjs promise before you return it?
...ways be a promise so always declare it.
var deferred = $q.defer();
if (Cache[id]) {
// Resolve the deferred $q object before returning the promise
deferred.resolve(Cache[id]);
return deferred.promise;
}
// else- not in cache
$http.get('/someUrl', {id:id...
Why use the yield keyword, when I could just use an ordinary IEnumerable?
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Don't forget that if the yield return statement never executes, you still get an empty collection result so there's no need to worry about a null reference exception. yield return is awesome with chocolate sprinkles.
– Ra...
The opposite of Intersect()
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As stated, if you want to get 4 as the result, you can do like this:
var nonintersect = array2.Except(array1);
If you want the real non-intersection (also both 1 and 4), then this should do the trick:
var nonintersect = array1.Excep...