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Read file line by line using ifstream in C++
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First, make an ifstream:
#include <fstream>
std::ifstream infile("thefile.txt");
The two standard methods are:
Assume that every line consists of two numbers and read token by token:
int a, b;
while (infile >> a >> b)
{
// p...
Autoreload of modules in IPython [duplicate]
...to have IPython automatically reload all changed code? Either before each line is executed in the shell or failing that when it is specifically requested to. I'm doing a lot of exploratory programming using IPython and SciPy and it's quite a pain to have to manually reload each module whenever I cha...
Using ViewPagerIndicator library with Android Studio and Gradle
I'm trying to use Jake Wharton's ViewPagerIndicator library , but I'm unable to get it working with my Gradle project in Android Studio.
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What are the effects of exceptions on performance in Java?
Question: Is exception handling in Java actually slow?
18 Answers
18
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What is the “Execute Around” idiom?
What is this "Execute Around" idiom (or similar) I've been hearing about?
Why might I use it, and why might I not want to use it?
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Are HTTPS URLs encrypted?
Are all URLs encrypted when using TLS/SSL (HTTPS) encryption? I would like to know because I want all URL data to be hidden when using TLS/SSL (HTTPS).
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How to drop rows of Pandas DataFrame whose value in a certain column is NaN
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I'd recommend using pandas.notnull instead of np.isfinite
– Wes McKinney
Nov 21 '12 at 3:08
12
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Is std::unique_ptr required to know the full definition of T?
I have some code in a header that looks like this:
8 Answers
8
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Why can templates only be implemented in the header file?
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Caveat: It is not necessary to put the implementation in the header file, see the alternative solution at the end of this answer.
Anyway, the reason your code is failing is that, when instantiating a template, the compiler creates a new class with the given template argument. F...
How to recognize USB devices in Virtualbox running on a Linux host? [closed]
...without any success. It seems they are not detected by Virtualbox itself, since if I select the guest from the Virtualbox home (I'm using a Windows XP 3 guest), choose Settings -> USB -> Add filter from device, no devices is listed, even if an USB pen is attached and recognized by my Lubuntu 13.10. ...