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Why does a base64 encoded string have an = sign at the end
...e of 3 characters number, because Base64 encoding takes each three bytes (8bits) and represents them as four printable characters in the ASCII standard.
Details :
(a) If you want to encode
ABCDEFG <=> [ABC] [DEF] [G
Base64 will deal(producing 4 characters) with the first block and the sec...
Generate random numbers using C++11 random library
...e with seed 1234" << endl;
//mt19937 dist (1234); //for 32 bit systems
mt19937_64 dist (1234); //for 64 bit systems
for (int i = 0; i<10; ++i)
cout << dist() << ' ';
}
void random_seed_mt19937_2()
{
space();
cout &...
size_t vs. uintptr_t
...any pointer type
Not necessarily! Hark back to the days of segmented 16-bit architectures for example: an array might be limited to a single segment (so a 16-bit size_t would do) BUT you could have multiple segments (so a 32-bit intptr_t type would be needed to pick the segment as well as the off...
Difference between size_t and unsigned int?
...he size of int is specified by the data model. For example LLP64 uses a 32-bit int and ILP64 uses a 64-bit int.
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How to delay the .keyup() handler until the user stops typing?
...earch field. Right now it searches for every keyup. So if someone types “Windows”, it will make a search with AJAX for every keyup: “W”, “Wi”, “Win”, “Wind”, “Windo”, “Window”, “Windows”.
...
How to get the list of all printers in computer
...
Try this:
foreach (string printer in System.Drawing.Printing.PrinterSettings.InstalledPrinters)
{
MessageBox.Show(printer);
}
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How to convert .crt to .pem [duplicate]
... can do this conversion with the OpenSSL library
http://www.openssl.org/
Windows binaries can be found here:
http://www.slproweb.com/products/Win32OpenSSL.html
Once you have the library installed, the command you need to issue is:
openssl x509 -in mycert.crt -out mycert.pem -outform PEM
...
How do I use JDK 7 on Mac OSX?
...e. I hope it helps.
I Downloaded the latest OpenJDK 1.7 universal (32/64 bits) JDK
from Mac OS/X branch from http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html
copied the jdk to /Library/Java/JavaVirtualMachines/ next to the
default 1.6.0 one
In Eclipse > Prefe...
How to convert an IPv4 address into a integer in C#?
...
32-bit unsigned integers are IPv4 addresses. Meanwhile, the IPAddress.Address property, while deprecated, is an Int64 that returns the unsigned 32-bit value of the IPv4 address (the catch is, it's in network byte order, so you n...
Get Folder Size from Windows Command Line
...ze% Bytes
However, this has several problems because cmd is limited to 32-bit signed integer arithmetic. So it will get sizes above 2 GiB wrong1. Furthermore it will likely count symlinks and junctions multiple times so it's at best an upper bound, not the true size (you'll have that problem with a...