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How to obtain a Thread id in Python?
... @CharlesAnderson beware, the python docs on Thread.name say "name - A string used for identification purposes only. It has no semantics. Multiple threads may be given the same name. The initial name is set by the constructor."
– drevicko
Dec 4 '12 at 6:10
...
What does a colon following a C++ constructor name do? [duplicate]
...or base/member initializer list
class MyClass {
public :
MyClass(std::string& arg) {
member_ = arg;
}
std::string& member_;
};
The only correct way is:
class MyClass {
public :
MyClass(std::string& arg)
: member_(arg)
{
}
std::string&...
Why is “while ( !feof (file) )” always wrong?
... stream is still in the good() state.
C++, iostreams getline:
for (std::string line; std::getline(std::cin, line); ) {
consume(line);
}
The result we must use is again std::cin, just as before.
POSIX, write(2) to flush a buffer:
char const * p = buf;
ssize_t n = bufsize;
for (ss...
Convert Base64 string to an image file? [duplicate]
I am trying to convert my base64 image string to an image file. This is my Base64 string:
8 Answers
...
Securely storing environment variables in GAE with app.yaml
...m google.appengine.ext import ndb
class Settings(ndb.Model):
name = ndb.StringProperty()
value = ndb.StringProperty()
@staticmethod
def get(name):
NOT_SET_VALUE = "NOT SET"
retval = Settings.query(Settings.name == name).get()
if not retval:
retval = Settings()
retva...
Printing newlines with print() in R
...
An advantage is that you don't have to remember to append a "\n" to the string passed to cat() to get a newline after your message. E.g. compare the above to the same cat() output:
> cat("File not supplied.\nUsage: ./program F=filename")
File not supplied.
Usage: ./program F=filename>
an...
Inversion of Control vs Dependency Injection
...ode will look as below:
public class SMSService
{
public void SendSMS(string mobileNumber, string body)
{
SendSMSUsingGateway(mobileNumber, body);
}
private void SendSMSUsingGateway(string mobileNumber, string body)
{
/*implementation for sending SMS using gatew...
Java: when to use static methods
...atic imports. Easier, shorter.
Adding methods: you really wanted the class String to have a removeSpecialChars() instance method, but it's not there (and it shouldn't, since your project's special characters may be different from the other project's), and you can't add it (since Java is somewhat san...
How to retrieve a module's path?
...(__file__) can also be tricky. At least on my system, it returns an empty string if you call it from the same directory as the file. ex.
# foo.py
import os
print '__file__ is:', __file__
print 'os.path.dirname(__file__) is:', os.path.dirname(__file__)
will output:
__file__ is: foo.py
os.path.d...
How do I call ::std::make_shared on a class with only protected or private constructors?
...and doesn't require a derived class:
#include <memory>
#include <string>
class A {
protected:
struct this_is_private;
public:
explicit A(const this_is_private &) {}
A(const this_is_private &, ::std::string, int) {}
template <typename... T>
static ::std:...