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Initial bytes incorrect after Java AES/CBC decryption
...println(decrypt(key, initVector,
encrypt(key, initVector, "Hello World")));
}
}
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Virtual Memory Usage from Java under Linux, too much memory used
...on looking at the wrong information. The usual phrasing is something like "Hello World on Java takes 10 megabytes! Why does it need that?" Well, here's a way to make Hello World on a 64-bit JVM claim to take over 4 gigabytes ... at least by one form of measurement.
java -Xms1024m -Xmx4096m com.exa...
What are the downsides to using Dependency Injection? [closed]
...syntax isn't significant here, but I have to spell it somehow...
void Say_Hello_World ()
{
std::cout << "Hello World" << std::endl;
}
I have a dependency I want to extract out and inject - the text "Hello World". Easy enough...
void Say_Something (const char *p_text)
{
std::cout ...
What's the @ in front of a string in C#?
... C# verbatim strings):
Dim path = "C:\My\Path"
Dim message = "She said, ""Hello, beautiful world."""
Escape sequences don't exist in VB (except for the doubling of the quote character, like in C# verbatim strings) which makes a few things more complicated. For example, to write the following code...
Passing argument to alias in bash [duplicate]
...n aliases, i use this method:
alias myalias='function __myalias() { echo "Hello $*"; unset -f __myalias; }; __myalias'
its a self-destructive function wrapped in an alias, so it pretty much is the best of both worlds, and doesnt take up an extra line(s) in your definitions... which i hate, oh yea...
Executing JavaScript without a browser?
...line and things will just work:
$ cat foo.js
#!/usr/bin/js
console.log("Hello, world!");
$ ls -lAF /usr/bin/js /etc/alternatives/js /usr/bin/nodejs
lrwxrwxrwx 1 root root 15 Jul 16 04:26 /etc/alternatives/js -> /usr/bin/nodejs*
lrwxrwxrwx 1 root root 20 Jul 16 04:26 /usr/bin/js ->...
PostgreSQL: How to pass parameters from command line?
...
You can use the -v construct e.g
psql -v v1=12 -v v2="'Hello World'" -v v3="'2010-11-12'"
and then refer to the variables in sql as :v1, :v2 etc
select * from table_1 where id = :v1;
Please pay attention on how we pass string/date value using two quotes " '...' "
...
Java: possible to line break in a properties file?
...oss multiple lines, and whitespace that starts a line is ignored:
myStr = Hello \
World
The Java docs put it this way:
A logical line holds all the data of a key-element pair, which may be spread out across several adjacent natural lines by escaping the line terminator sequence with a...
Null vs. False vs. 0 in PHP
...thing at the beginning of the string !
<?php
// pitfall :
if (strrpos("Hello World", "Hello")) {
// never exectuted
}
// smart move :
if (strrpos("Hello World", "Hello") !== False) {
// that works !
}
?>
And of course, if you deal with states:
You want to make a difference betwee...
What exactly is Type Coercion in Javascript?
...ram? There’s nothing preventing the programmer from typing {} + {} or “hello” + 5 in a program even if the language doesn’t think those expressions make any sense.
What ultimately happens in those situations depends on how strict the language is about its type rules.
A languages type syst...