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What are the special dollar sign shell variables?
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1398
$1, $2, $3, ... are the positional parameters.
"$@" is an array-like construct of all positiona...
Python - 'ascii' codec can't decode byte
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"你好".encode('utf-8')
encode converts a unicode object to a string object. But here you have invoked it on a string object (because you don't have the u). So python has to convert the string to a unicode object first. So it does the equivale...
How to use `subprocess` command with pipes
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8 Answers
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Ruby on Rails and Rake problems: uninitialized constant Rake::DSL
...e .9.0 breaks Rails and several other things, you need to:
gem "rake", "0.8.7"
in your Gemfile.
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Url decode UTF-8 in Python
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The data is UTF-8 encoded bytes escaped with URL quoting, so you want to decode, with urllib.parse.unquote(), which handles decoding from percent-encoded data to UTF-8 bytes and then to text, transparently:
from urllib.parse import unquote
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How to write multiple line string using Bash with variables?
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480
The syntax (<<<) and the command used (echo) is wrong.
Correct would be:
#!/bin/bash...
Is an array an object in java
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edited May 11 '16 at 1:08
Pang
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answered Ja...
How to modify memory contents using GDB?
...gram variable (see GDB: assignment):
(gdb) l
6 {
7 int i;
8 struct file *f, *ftmp;
9
(gdb) set variable i = 10
(gdb) p i
$1 = 10
Or you can just update arbitrary (writable) location by address:
(gdb) set {int}0x83040 = 4
There's more. Read the manual.
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how to solve “ruby installation is missing psych” error?
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218
In my case
rvm pkg install libyaml
and
rvm reinstall ruby-1.9.3-p125
solved the problem.
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How to get all child inputs of a div element (jQuery)
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308
Use it without the greater than:
$("#panel :input");
The > means only direct children of t...