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Using curl POST with variables defined in bash script functions
...ite a function that generates the post data of your script. This saves you from all sort of headaches concerning shell quoting and makes it easier to read an maintain the script than feeding the post data on curl's invocation line as in your attempt:
generate_post_data()
{
cat <<EOF
{
"ac...
Why are elementwise additions much faster in separate loops than in a combined loop?
...ch large allocations are requested, the allocator will request fresh pages from the OS. Therefore, there is a high chance that large allocations will appear at the same offset from a page-boundary.
Here's the test code:
int main(){
const int n = 100000;
#ifdef ALLOCATE_SEPERATE
double *a1 =...
What is object serialization?
...when you want to transmit one object data across the network, for instance from one JVM to another.
In Java, the serialization mechanism is built into the platform, but you need to implement the Serializable interface to make an object serializable.
You can also prevent some data in your object fr...
Does the APNS device token ever change, once created?
...
From [Apple Documentation ApplePushService]2
The form of this phase of token trust ensures that only APNs generates
the token which it will later honor, and it can assure itself that a
token handed to it by a device i...
Why don't C++ compilers define operator== and operator!=?
...
That problem doesn't stop it from generating a copy ctor, where it's quite harmful.
– MSalters
Oct 20 '08 at 9:57
81
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Inheriting from a template class in c++
...a is not a template class, but a class template. That is, it is a template from which classes can be generated. Area<int> is such a class (it's not an object, but of course you can create an object from that class in the same ways you can create objects from any other class). Another such clas...
How to assign Profile values?
...e. directly... the strongly-typed class is not magically generated for you from the Web.config file, so you have to roll your own.
The sample code in MSDN assumes you are using a Web Site Project, and they tell you just to add a <profile> section to your Web.config and party on with Profile.p...
Copy files from one directory into an existing directory
...
If you want to copy something from one directory into the current directory, do this:
cp dir1/* .
This assumes you're not trying to copy hidden files.
share
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Verify a certificate chain using openssl verify
...
From verify documentation:
If a certificate is found which is its own issuer it is assumed to be the root CA.
In other words, root CA needs to self signed for verify to work. This is why your second command didn't work. Try...
Why is Multiple Inheritance not allowed in Java or C#?
...can read this article:
The reasons for omitting multiple
inheritance from the Java language
mostly stem from the "simple, object
oriented, and familiar" goal. As a
simple language, Java's creators
wanted a language that most developers
could grasp without extensive
training. To tha...