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How to call an external command?
...ocess.Popen("echo Hello World", shell=True, stdout=subprocess.PIPE).stdout.read()
instead of:
print os.popen("echo Hello World").read()
but it is nice to have all of the options there in one unified class instead of 4 different popen functions. See the documentation.
The call function from th...
Correct format specifier for double in printf
...nter, which is not promoted, so you have to tell scanf whether you want to read a float or a double, so for scanf, %f means you want to read a float and %lf means you want to read a double (and, for what it's worth, for a long double, you use %Lf for either printf or scanf).
1. C99, §6.5.2.2/6:...
Cross Domain Form POSTing
...ferent protocol or domain or port), it is all about restricting access to (reading) response data from another url (and thereby preventing javascript to update document with forms that have security tokens from other url).
– Mohsenme
May 7 '15 at 22:46
...
C# vs Java generics [duplicate]
...ks here and there (most notably in constraints). But basically if you can read one, you can likely read/use the other.
The biggest difference though is in the implementation.
Java uses the notion of type erasure to implement generics. In short the underlying compiled classes are not actually...
APP INVENTOR硬件交互学习教程03——巧借arduino nano 配置HC-05 - 创客硬...
...intln("Enter AT commands!");
}
void loop() {
// read from port 1, send to port 0:
if (EEBlue.available()) {
int inByte = EEBlue.read();
Serial.write(inByte);
}
// read from port 0, send to port 1:
&nbs...
How do I forward declare an inner class? [duplicate]
...mplates:
// Foo.h
struct Foo
{
export template<class T> void Read(T it);
};
// Foo.cpp
#include "Foo.h"
#include "Container.h"
/*
struct Container
{
struct Inner { };
};
*/
export template<>
void Foo::Read<Container::Inner>(Container::Inner& it)
{
}
#inc...
What is the difference between server side cookie and client side cookie?
...and client side cookies? Is there a way to create cookies that can only be read on the server or on the client?
4 Answers
...
How to add an image to a JPanel?
...blic ImagePanel() {
try {
image = ImageIO.read(new File("image name and path"));
} catch (IOException ex) {
// handle exception...
}
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
...
Verify a certificate chain using openssl verify
...the comments, this command implicitly trusts Intermediate.pem. I recommend reading the first part of the post Greg references (the second part is specifically about pyOpenSSL and not relevant to this question).
In case the post goes away I'll quote the important paragraphs:
Unfortunately, an "i...
Dynamic variable names in Bash
...n indirection variable, not unlike a C pointer. Bash then has a syntax for reading the aliased variable: ${!name} expands to the value of the variable whose name is the value of the variable name. You can think of it as a two-stage expansion: ${!name} expands to $var_37, which expands to lolilol.
na...