Many Python web frameworks already existed when Django appeared in 2005 — indeed, the joke was already going around, by then, that Python is “the language with more web frameworks than keywords” (and Guido rejected my proposal to fix that in Py3k by adding many, many more keywords). Now “django” per se is a bit … Read more
How about using Ctrl+R for searching on the Terminal Utility in Mac for searching on the command history, dudeOnMac: freddy$ whoami freddy (reverse-i-search)`who’: whoami Well for controlling how long the history would be retained that depends on a few shell environment variables, HISTFILESIZE which is nothing but number of lines of history you want to … Read more
There’s many reasons you don’t just have a huge number of registers: They’re highly linked to most pipeline stages. For starters, you need to track their lifetime, and forward results back to previous stages. The complexity gets intractable very quickly, and the number of wires (literally) involved grows at the same rate. It’s expensive on … Read more
On older machines, codes smaller than 8 bits were fairly common, but most of those have been dead and gone for years now. C and C++ have mandated a minimum of 8 bits for char, at least as far back as the C89 standard. [Edit: For example, C90, ยง5.2.4.2.1 requires CHAR_BIT >= 8 and UCHAR_MAX … Read more
I can only imagine of sending a value from the server to the client which is (unchanged) sent back to maintain a kind of a state. Precisely. In fact, it’s still being used for this purpose today because HTTP as we know it today is still, at least fundamentally, a stateless protocol. This use case … Read more
NVaughan (the OP) has already stated the answer in an update to the question: history behaves differently in bash than it does in zsh: In short: zsh: history lists only the 15 most recent history entries history 1 lists all – see below. bash: history lists all history entries. Sadly, passing a numerical operand to … Read more
Try git log –follow on your file. Is it possible to move/rename files in Git and maintain their history?
See the wikipedia article on Unix signals for the list of other signals. SIGKILL just happened to get the number 9. You can as well use the mnemonics, as the numbers: kill -SIGKILL pid
As to the historic rationale, I can’t say for certain (because I didn’t design them). My thoughts on the matter are that early CPUs got their original program counter set to 0 and it was a natural desire to start the stack at the other end and grow downwards, since their code naturally grows upward. … Read more
Brian Kernighan actually wrote the first “hello, world” program as part of the documentation for the BCPL programming language developed by Martin Richards. BCPL was used while C was being developed at Bell Labs a few years before the publication of Kernighan and Ritchie’s C book in 1972. As part of the research for a … Read more