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“Default Activity Not Found” on Android Studio upgrade
...e launch activity default?
possibly this could be your mistake
Step 1: Select Edit Configurations
Step 2: watch this warning: Default Activity not found
Step 3: select a default activity
Step 3: Save your changes and finish
Good Luck
...
Increasing (or decreasing) the memory available to R processes
...program
icon (the icon on your desktop or in
your programs directory). Select
``Properties'', and then select the
``Shortcut'' tab. Look for the
``Target'' field and after the closing
quotes around the location of the R
executible, add
--max-mem-size=500M
as shown in the fig...
Can a CSV file have a comment?
...g else"
1,2
Pay close attention at the 'quotes' in the first line.
When converting your text to columns using the Excel wizard, remember checking the 'Treat consecutive delimiters as one', setting it to use 'quotes' as delimiter.
Thus, Excel will split the text at the commas, keeping the 'commen...
How to print a dictionary line by line in Python?
...
You could use the json module for this. The dumps function in this module converts a JSON object into a properly formatted string which you can then print.
import json
cars = {'A':{'speed':70, 'color':2},
'B':{'speed':60, 'color':3}}
print(json.dumps(cars, indent = 4))
The output looks...
Getting all types in a namespace via reflection
...etTypes()
where t.IsClass && t.Namespace == nspace
select t;
q.ToList().ForEach(t => Console.WriteLine(t.Name));
share
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How do I create a copy of an object in PHP?
...what you intend to do, it does it in an awfully slow way. Not only are you converting all your object into a string and back, using time and memory, you also break PHPs possible CopyOnWrite mechanism. A much better way is to implement your __clone method properly as suggested by stackoverflow.com/a/...
How to get a key in a JavaScript object by its value?
...
I think Converting it to a string would be better to fix type errors just add .toString() like obj[ key ].toString() and to the value if desired...
– CrandellWS
Jan 6 '15 at 20:19
...
How to get the body's content of an iframe in Javascript?
...getElementById('id_description_iframe');
// or
var iframe = document.querySelector('#id_description_iframe');
And then use jQuery's solution
var iframeDocument = iframe.contentDocument || iframe.contentWindow.document;
It works even in the Internet Explorer which does this trick during the ...
How to tell Eclipse Workspace?
...
If any project exists in the workspace:
Select a project and its properties (e.g. Menu: Project -> Properties or right mouse button->Properties). Then go to Resource -> Linked Resources and the WORKSPACE_LOC's Path Variable value shows the current workspa...
Comparing two dataframes and getting the differences
... lists, to do it efficiently we should first order them then compare them (converting the list to sets/hashing would also be fast; both are an incredible improvement to the simple O(N^2) double comparison loop
Note: the following code produces the tables:
df1=pd.DataFrame({
'Date':['2013-11-24...