Introduction
An Israeli website, “Kama Kesef” (כמה כסף in Hebrew, meaning “how much money”) is a neat web calculator telling how much to give as a money present in weddings and other events. When I realized that I’m far from being the only one using it to decide what sum to write down on the cheque, [...]
One of the things I try to avoid as an FPGA engineer, is to manually configure the pin constraints (in the UCF file) in order to tell the tools which FPGA pin is connected to what. Not only is this extremely boring, but I also think that getting it done right (at the first go) [...]
Before anything: Recent distros come with packaged utilities for encrypting a disk, partition, USB stick or whatever block device. This little cookbook is for those who are not that lucky, or prefer to do things with their bare hands. If you’re not familiar with using loop devices, I suggest playing a bit with them before [...]
SQL DATETIME sucks
MySQL, among other databases, has a column type called DATETIME. Its name seems to mislead people into thinking that it’s suitable for storing time of events. Or suitable for anything.
This is a general SQL thing, by the way, but I’ll demonstrate it on MySQL.
I often find this column type in other people’s database [...]
Take a close look on the Verilog code below. This is a plainly-written synchronous ROM. Do you see anything wrong with it? (Spoiler: There is nothing wrong with it. Not that I know of)
module coeffs
(
clk, en,
addr, data
);
input clk, en;
input [9:0] addr;
output [15:0] data;
reg [15:0] data;
always [...]
When I first discovered that there is both BLOB and TEXT in databases, I was puzzled. They occupy the same amount of disk space, and the database doesn’t alter the data itself anyhow. Why two?
Of course, I followed the stream, and went for TEXT and VARCHAR for everything, since I don’t store binary data in [...]
