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Get list from pandas DataFrame column headers
... input so I won't know how many columns there will be or what they will be called.
19 Answers
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PostgreSQL database default location on Linux
...directory where postgresql will keep all databases" (and configuration) is called "data directory" and corresponds to what PostgreSQL calls (a little confusingly) a "database cluster", which is not related to distributed computing, it just means a group of databases and related objects managed by a ...
How to pass arguments to addEventListener listener function?
... you have more code that operates on the same someVar variable next to the call to addEventListener)
var someVar;
someVar = some_other_function();
alert(someVar);
someObj.addEventListener("click", function(){
some_function(someVar);
}, false);
...
C# elegant way to check if a property's property is null
...tension methods? You could create an extension method for your object type called GetPropC().
Example:
public static class MyExtensions
{
public static int GetPropC(this MyObjectType obj, int defaltValue)
{
if (obj != null && obj.PropertyA != null & obj.PropertyA.Proper...
Delete multiple remote branches in git
...rectly parses branch names with /. In this case i presume that your remote called origin.
Command for deleting remote branches with names staring with PATTERN:
git branch -r | awk -Forigin/ '/\/PATTERN/ {print $2}' | xargs -I {} git push origin :{}
And don't forget to check what you are going to ...
DateTimePicker: pick both date and time
...
DateTime Picker can be used to pick both date and time that is why it is called 'Date and Time Picker'. You can set the "Format" property to "Custom" and set combination of different format specifiers to represent/pick date/time in different formats in the "Custom Format" property. However if you ...
Get index of array element faster than O(n)
...nt to get index of the value in array. Is there any other way, rather then call Array#index to get it? The problem comes from the need of keeping really huge array and calling Array#index enormous amount of times.
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Intellij Idea 9/10, what folders to check into (or not check into) source control?
...
We have a FAQ article covering this question.
[The .idea] format is used by all the recent IDE versions by default.
Here is what you need to share:
All the files under .idea directory in the project root except the workspace.xml and tasks.xml files which store user s...
How to concatenate stdin and a string?
...ant is then:
echo 'http://dx.doi.org/'"$(pbpaste)"
The $(...) syntax is called command substitution. In short, it executes the commands enclosed in a new subshell, and substitutes the its stdout output to where the $(...) was invoked in the parent shell. So you would get, in effect:
echo 'http:/...
Relationship between hashCode and equals method in Java [duplicate]
... Object does
return distinct integers for distinct objects. (This is typically implemented by
converting the internal address of the object into an integer, but this implementation
technique is not required by the JavaTM programming language.)
However some time you want the hash code to be t...