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Immutability of Strings in Java
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have you perchance every tried to program in C? Just read the primer on pointers and you'll understand coobird's answer perfectly.
– Ryan Fernandes
Oct 12 '09 at 2:58
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Creating a dictionary from a csv file?
... unique key, value pair within the dictionary. I tried to use the csv.DictReader and csv.DictWriter classes, but I could only figure out how to generate a new dictionary for each row. I want one dictionary. Here is the code I am trying to use:
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How can I pass command-line arguments to a Perl program?
...guments as input files, you can just pass them in and then use <> to read their contents.
If they have a different meaning, you can use GetOpt::Std and GetOpt::Long to process them easily. GetOpt::Std supports only single-character switches and GetOpt::Long is much more flexible. From GetOpt:...
Is modern C++ becoming more prevalent? [closed]
...yone, but to a large extent, I agree, most people who have a choice have already gone for C# or Java or other such languages.
– jalf
Feb 11 '09 at 18:06
3
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Why do most fields (class members) in Android tutorial start with `m`?
...the prefix (or suffix) to see the meaningful part of the name. The more we read the code, the less we see the prefixes. Eventually the prefixes become unseen clutter and a marker of older code." - Robert Martin in Clean Code
– mikugo
Jan 2 '16 at 19:07
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What's a monitor in Java?
...nism to control concurrent access to an object.
This allows you to do:
Thread 1:
public void a()
{
synchronized(someObject) {
// do something (1)
}
}
Thread 2:
public void b()
{
synchronized(someObject) {
// do something else (2)
}
}
This prevents Threads 1 an...
Turn a simple socket into an SSL socket
...;
SSL_set_fd(cSSL, newsockfd );
//Here is the SSL Accept portion. Now all reads and writes must use SSL
ssl_err = SSL_accept(cSSL);
if(ssl_err <= 0)
{
//Error occurred, log and close down ssl
ShutdownSSL();
}
You are then able read or write using:
SSL_read(cSSL, (char *)charBuffer, nB...
Operator overloading in Java
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@tuğrulbüyükışık: There are already wrappers for all the existing primitive types - but if you wanted to create your own new wrapper type, you wouldn't be able to make it behave like the other ones, as they have specific support in the language.
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Setting environment variables on OS X
...ou want it to pick up the changed environment.
This includes any shells already running under Terminal.app, although if you're there you can set the environment more directly, e.g. with export PATH=/opt/local/bin:/opt/local/sbin:$PATH for bash or zsh.
How to keeping changes after a reboot
To keep...
How to do what head, tail, more, less, sed do in Powershell? [closed]
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Get-Content (alias: gc) is your usual option for reading a text file. You can then filter further:
gc log.txt | select -first 10 # head
gc -TotalCount 10 log.txt # also head
gc log.txt | select -last 10 # tail
gc -Tail 10 log.txt # also tail (since PSv3), al...