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How to commit changes to a new branch
...
git checkout -b your-new-branch
git add <files>
git commit -m <message>
First, checkout your new branch. Then add all the files you want to commit to staging.
Lastly, commit all the files you just added. You might want to do a git push origin your-ne...
I'm getting Key error in python
...]
'1'
>>> mydict['c']
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
KeyError: 'c'
>>>
So, try to print the content of meta_entry and check whether path exists or not.
>>> mydict = {'a':'1','b':'2'}
>>> print mydict
{'a': '...
Rails nested form with has_many :through, how to edit attributes of join model?
...inker.rb needs accepts_nested_attributes_for :article
Then in the form:
<%= form_for(@topic) do |topic_form| %>
...fields...
<%= topic_form.fields_for :linkers do |linker_form| %>
...linker fields...
<%= linker_form.fields_for :article do |article_form| %>
...ar...
C++ Best way to get integer division and remainder
...t wondering, if I want to divide a by b, and am interested both in the result c and the remainder (e.g. say I have number of seconds and want to split that into minutes and seconds), what is the best way to go about it?
...
dplyr: “Error in n(): function should not be called directly”
...th dplyr and plyr have the functions summarise/summarize.
Look at the results of conflicts() to see masked objects.
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In .NET, which loop runs faster, 'for' or 'foreach'?
... for an equivalent for loop. That explains why for this benchmark, the results are basically the same:
using System;
using System.Diagnostics;
using System.Linq;
class Test
{
const int Size = 1000000;
const int Iterations = 10000;
static void Main()
{
double[] data = new d...
How do I clone a range of array elements to a new array?
...
You could add it as an extension method:
public static T[] SubArray<T>(this T[] data, int index, int length)
{
T[] result = new T[length];
Array.Copy(data, index, result, 0, length);
return result;
}
static void Main()
{
int[] data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
...
Fatal error: “No Target Architecture” in Visual Studio
...
Use #include <windows.h> instead of #include <windef.h>.
From the windows.h wikipedia page:
There are a number of child header files that are automatically included with windows.h. Many of these files cannot simply be incl...
Difference between string and char[] types in C++
...ut automatically manages it for you. Most string implementations have a built-in array of 16 characters (so short strings don't fragment the heap) and use the heap for longer strings.
You can access a string's char array like this:
std::string myString = "Hello World";
const char *myStringChars = ...
How to set the authorization header using curl
... Basic authentication used in HTTP (which is the type curl uses by
default) is plain text based, which means it sends username and password
only slightly obfuscated, but still fully readable by anyone that sniffs on
the network between you and the remote server.
To tell curl to use a u...