“int cannot be dereferenced” in Java
id is of primitive type int and not an Object. You cannot call methods on a primitive as you are doing here : Try replacing this: with
application/x-www-form-urlencoded or multipart/form-data?
TL;DR Summary; if you have binary (non-alphanumeric) data (or a significantly sized payload) to transmit, use multipart/form-data. Otherwise, use application/x-www-form-urlencoded. The MIME types you mention are the two Content-Type headers for HTTP POST requests that user-agents (browsers) must support. The purpose of both of those types of requests is to send a list of name/value … Read more
How to unmount a busy device
YES!! There is a way to detach a busy device immediately – even if it is busy and cannot be unmounted forcefully. You may cleanup all later: NOTE/CAUTION These commands can disrupt a running process, cause data loss OR corrupt open files. Programs accessing target DEVICE/NFS files may throw errors OR could not work properly … Read more
Why use as.factor() instead of just factor()
as.factor is a wrapper for factor, but it allows quick return if the input vector is already a factor: Comment from Frank: it’s not a mere wrapper, since this “quick return” will leave factor levels as they are while factor() will not: Expanded answer two years later, including the following: What does the manual say? … Read more
What is Bit Masking?
I am fairly new to C programming, and I encountered bit masking. Can someone explain to me the general concept and function of bit masking? Examples are much appreciated.
Java “Error occurred during initialization of VM” fix?
I was trying to make a Minecraft server and got the following error on startup: Error occured during initialization of VM Could not reserve enough space for object heap Error: Could not create the Java Virtual Machine Error: A fatal exception has occurred. Program will exit. I tried everything I could find: I created CLASS … Read more
What does it mean to have an index to scalar variable error? python
exponent is a 1D array. This means that exponent[0] is a scalar, and exponent[0][i] is trying to access it as if it were an array. Did you mean to say: or even ?
What is the meaning of the word logits in TensorFlow?
In the following TensorFlow function, we must feed the activation of artificial neurons in the final layer. That I understand. But I don’t understand why it is called logits? Isn’t that a mathematical function?
“Error occurred during initialization of VM; Could not reserve enough space for object heap” using -Xmx3G
First of all, I have a box with 8gb of ram, so I doubt total memory is the issue. This application is running fine on machines with 6gb or less. I am trying to reserve 3GB of space using -Xmx3G under “VM Arguments” in Run Configurations in Eclipse. Every time I try to reserve more … Read more
How do I concatenate strings and variables in PowerShell?
See the Windows PowerShell Language Specification Version 3.0, p34, sub-expressions expansion.