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Pandas read_csv low_memory and dtype options
...er the example of one file which has a column called user_id.
It contains 10 million rows where the user_id is always numbers.
Since pandas cannot know it is only numbers, it will probably keep it as the original strings until it has read the whole file.
Specifying dtypes (should always be done)
add...
How do I call ::std::make_shared on a class with only protected or private constructors?
...p;&...args) {
return ::std::make_shared<A>(this_is_private{0},
::std::forward<T>(args)...);
}
protected:
struct this_is_private {
explicit this_is_private(int) {}
};
A(const A &) = delete;
const A &operator =(c...
How to sort an ArrayList in Java [duplicate]
...;Fruit> fruits= new ArrayList<Fruit>();
Fruit fruit;
for(int i = 0; i < 100; i++)
{
fruit = new Fruit();
fruit.setname(...);
fruits.add(fruit);
}
// Sorting
Collections.sort(fruits, new Comparator<Fruit>() {
@Override
public int compare(Fruit fruit2, Fruit f...
git status shows modifications, git checkout — doesn't remove them
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edited Jun 20 at 9:12
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111 silver badge
answered Jan 6 '10 at 21:34
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How to force a Solution file (SLN) to be opened in Visual Studio 2013?
Trying to open a VS 2012 solution (SLN file) explicitly in VS 2013 succeeds. Simply double-clicking it in Windows Explorer still opens it in VS 2012 instead.
...
VIM + JSLint?
... following line to the beginning of mylintrun.js:
var filename= arguments[0];
and change last line of code in mylintrun.js ("print( ...)") to:
print ( filename + ":" + (obj["line"] + 1) + ":" + (obj["character"] + 1) + ":" + obj["reason"] );
This makes in mylintrun.js output a error list that...
In Git, how can I write the current commit hash to a file in the same commit
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answered Aug 9 '10 at 19:30
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Css height in percent not working [duplicate]
...
You need to set a 100% height on all your parent elements, in this case your body and html. This fiddle shows it working.
html, body { height: 100%; width: 100%; margin: 0; }
div { height: 100%; width: 100%; background: #F52887; }
<ht...
Disable password authentication for SSH [closed]
...
206
In file /etc/ssh/sshd_config
# Change to no to disable tunnelled clear text passwords
#Passwor...
How to configure a HTTP proxy for svn
... setting the following lines:
#http-proxy-host=my.proxy
#http-proxy-port=80
#http-proxy-username=[username]
#http-proxy-password=[password]
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