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How to track down a “double free or corruption” error
...You can set this from gdb by using the set environment MALLOC_CHECK_ 2 command before running your program; the program should abort, with the free() call visible in the backtrace.
see the man page for malloc() for more information
...
What is the --save option for npm install?
I saw some tutorial where the command was:
11 Answers
11
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How to fix Error: listen EADDRINUSE while using nodejs?
If I run a server with the port 80, and I try to use xmlHTTPrequest i get this error: Error: listen EADDRINUSE
39 Answer...
Using Regular Expressions to Extract a Value in Java
...blic static void main(String[] args) {
// create matcher for pattern p and given string
Matcher m = p.matcher("Testing123Testing");
// if an occurrence if a pattern was found in a given string...
if (m.find()) {
// ...then you can use group() methods.
System.out.prin...
How to run a Python script in the background even after I logout SSH?
I have Python script bgservice.py and I want it to run all the time, because it is part of the web service I build. How can I make it run continuously even after I logout SSH?
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How to find all occurrences of a substring?
Python has string.find() and string.rfind() to get the index of a substring in a string.
20 Answers
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Trying to embed newline in a variable in bash [duplicate]
...n the source code
p="${var1}
${var2}"
echo "${p}"
Using $'\n' (only bash and zsh)
p="${var1}"$'\n'"${var2}"
echo "${p}"
Details
1. Inserting \n
p="${var1}\n${var2}"
echo -e "${p}"
echo -e interprets the two characters "\n" as a new line.
var="a b c"
first_loop=true
for i in $var
do
p="...
How to trigger a phone call when clicking a link in a web page on mobile phone
...el: scheme. So use <a href="tel:555-555-5555">555-555-5555</a> and you should be good to go.
If you want to use it for an image, the <a> tag can handle the <img/> placed in it just like other normal situations with : <a href="tel:555-555-5555"><img src="path/to/phon...
What is the most elegant way to remove a path from the $PATH variable in Bash?
... @Martin: POSIX does not require this behavior, but does document and allow it: pubs.opengroup.org/onlinepubs/9699919799/basedefs/…
– Fred Foo
Mar 13 '11 at 23:04
1
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Eclipse returns error message “Java was started but returned exit code = 1”
...ine):
/!\ make sure, that the -vm option occurs before the -vmargs command.
Everything after -vmargs is passed directly to the JVM.
-vm
c:/wherever/java/jdk1.6.0_21/jre/bin/server/jvm.dll
-vmargs...
...to your eclipse.ini file, pointing to the JDK you want to use, and check that the req...