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What do numbers using 0x notation mean?
What does a 0x prefix on a number mean?
5 Answers
5
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How does a public key verify a signature?
...crypting):
openssl rsautl -encrypt -inkey public.pem -pubin -in message.txt -out message.ssl
openssl rsautl -decrypt -inkey private.pem -in message.ssl -out message.txt
Private key encrypts, public key decrypts (signing):
openssl rsautl -sign -inkey private.pem -in message.txt -...
How to upload files to server using JSP/Servlet?
...oad" method="post" enctype="multipart/form-data">
<input type="text" name="description" />
<input type="file" name="file" />
<input type="submit" />
</form>
After submitting such a form, the binary multipart form data is available in the request body in a dif...
Compare two objects and find the differences [duplicate]
...
One Flexible solution: You could use reflection to enumerate through all of the properties and determine which are and are not equal, then return some list of properties and both differing values.
Here's an example of some code th...
Disable password authentication for SSH [closed]
...
In file /etc/ssh/sshd_config
# Change to no to disable tunnelled clear text passwords
#PasswordAuthentication no
Uncomment the second line, and, if needed, change yes to no.
Then run
service ssh restart
share
...
POST data to a URL in PHP
...ADER, 0);
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, 1);
$response = curl_exec( $ch );
This will send the post variables to the specified url, and what the page returns will be in $response.
share
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What is the difference between “#!/usr/bin/env bash” and “#!/usr/bin/bash”?
...ou will be unable to write /usr/bin/env awk -f) if you wish to support Linux, as POSIX is vague on how the line is to be interpreted, and Linux interprets everything after the first space to denote a single argument. You can use /usr/bin/env -S on some versions of env to get around this, but then th...
Why are elementwise additions much faster in separate loops than in a combined loop?
...nchmark Results:
EDIT: Results on an actual Core 2 architecture machine:
2 x Intel Xeon X5482 Harpertown @ 3.2 GHz:
#define ALLOCATE_SEPERATE
#define ONE_LOOP
00600020
006D0020
007A0020
00870020
seconds = 6.206
#define ALLOCATE_SEPERATE
//#define ONE_LOOP
005E0020
006B0020
00780020
00850020
seconds...
Understanding NSRunLoop
Can anyone explain for what is NSRunLoop ? so as I know NSRunLoop is a something connected with NSThread right? So assume I create a Thread like
...
Why do I get a SyntaxError for a Unicode escape in my file path?
...aw string, double your slashes or use forward slashes instead:
r'C:\Users\expoperialed\Desktop\Python'
'C:\\Users\\expoperialed\\Desktop\\Python'
'C:/Users/expoperialed/Desktop/Python'
In regular python strings, the \U character combination signals a extended Unicode codepoint escape.
You can hit a...