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Why cast an unused function parameter value to void?
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It is there to avoid warnings from the compiler because some parameters are unused.
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Build .so file from .c file using gcc command line
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To generate a shared library you need first to compile your C code with the -fPIC (position independent code) flag.
gcc -c -fPIC hello.c -o hello.o
This will generate an object file (.o), now you take it and create the .so file:
gcc hello.o -shared -o libhello.so
E...
What does value & 0xff do in Java?
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@DmitryMinkovsky - The hex bit pattern fe in 8-bit, two's complement corresponds to the decimal value −2. To preserve the value, Integer.valueOf(byte) would need to produce ff ff ff fe (−2 in 32-bit, two's complement), not 00 00 00 fe (decimal value 254). This transformation (fr...
SQLite - replace part of a string
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@WestonWedding I have compared query time with and without WHERE clause. Without where query is taking twice time.
– Parag Bafna
Feb 23 '18 at 17:58
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Run task only if host does not belong to a group
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Here's another way to do this:
- name: my command
command: echo stuff
when: "'groupname' not in group_names"
group_names is a magic variable as documented here: https://docs.ansible.com/ansible/latest/user_guide/playbooks_variables.html#accessing-information-ab...
Remove commas from the string using JavaScript
I want to remove commas from the string and calculate those amount using JavaScript.
2 Answers
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HTTP GET Request in Node.js Express
...d by creating an options object like:
const options = {
host: 'somesite.com',
port: 443,
path: '/some/path',
method: 'GET',
headers: {
'Content-Type': 'application/json'
}
};
And providing a callback function.
For example, in a service, I require the REST module above and then do...
Can you put two conditions in an xslt test attribute?
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