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Append column to pandas dataframe
...efore you join() or concat() if you trying to deal with some data frame by selecting some rows from another DataFrame.
One example below shows some interesting behavior of join and concat:
dat1 = pd.DataFrame({'dat1': range(4)})
dat2 = pd.DataFrame({'dat2': range(4,8)})
dat1.index = [1,3,5,7]
dat...
What is aria-label and how should I use it?
...t can I do in my browser (chrome) to hear this? And how can a blind person select this button if he have no idea where it is?
– Salvador Dali
Feb 26 '14 at 11:57
1
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Mapping composite keys using EF code first
...f(ColumnAttribute.Order))
.TypedValue.Value ?? 0)
.Select(x => x.Name)
.ToArray();
// apply the keys to the model builder
modelBuilder.Entity(entity.ClrType).HasKey(orderedKeys);
}
I haven't fully tested this in all situations, but it works in my basic t...
How do I set the maximum line length in PyCharm?
...ode style->python : ensure right margin is not exceeded. Once this was selected the reformat would work.
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How to add an Access-Control-Allow-Origin header
...for the file
scroll down to the file
click the cog icon
click Edit Headers
select Access-Control-Allow-Origin
add the single character '*' (without the quotes)
hit enter
repeat for the other files
If you need to continue and do #2, then you'll need a command line with CURL
curl -D - --header "X-A...
Rails 4 multiple image or file upload using carrierwave
How can I upload multiple images from a file selection window using Rails 4 and CarrierWave? I have a post_controller and post_attachments model. How can I do this?
...
Finding all objects that have a given property inside a collection [duplicate]
... = ....; // master list
Collection<Cat> smallList = CollectionUtils.select(bigList, new Predicate() {
public boolean evaluate(Object o) {
Cat c = (Cat)o;
return c.getFavoriteFood().equals("Wiskas")
&& c.getWhateverElse().equals(Something);
}
});
...
Sorting an IList in C#
...rty, I believe you could sort as follows:
from c in list
orderby c.Engine
select c;
Edit: You do need to be quick to get answers in here. As I presented a slightly different syntax to the other answers, I will leave my answer - however, the other answers presented are equally valid.
...
How do you make a WPF slider snap only to discrete integer positions?
...0, 20, ...) but all the values in-between (1, 2, ...) are valid and can be selected with e.g. arrow keys.
– mkjeldsen
Feb 20 '13 at 6:45
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Automatically add all files in a folder to a target using CMake?
... Makefile manually, you might generate a SRCS variable using a function to select all .cpp and .h files. If a source file is later added, re-running make will include it.
However, CMake (with a command like file(GLOB ...)) will explicitly generate a file list and place it in the auto-generated Mak...