Go back to the exact post page number

I use pagination in my index.php and I have many posts per page. Every post have a button to go back to home. The problem is that when I visit a post in a page 5 for example, the button always send me on the first page.

I’m using this: <a href="<?php echo home_url(); ?>">back</a>

Is there a simple way to track the post page position, and use it to go back properly?

What happens if a sender changes the TCP window size over multiple packets that have the same ACK number?

I’m currently doing research on evasion attacks that seek to bypass a Deep-learning based Network Intrusion Detection System.

In order to achieve this, I need to know what the constraints are for the TCP window size field in the TCP packet header. Imagine a client has just sent the last TCP-ACK packet to a server in order to complete the 3-way handshake. He then immediately proceeds to send a GET request to the server (these 2 packets are thus sent one after the other, and contain the same ACK-number).

What happens if the TCP window size in the TCP-ACK packet does not match the window size in the TCP packet containing the GET request? Will the receiver simply observe the last value for the window size that he obtained? Or will there be a violation in the TCP protocol in any way? You can assume that the change in window size is very small, and will not cause the buffer to be full.

More generally, if the client sends N uninterrupted packets (e.g. a heavy-load POST request), can he change the window size in each packet header without repercussions?

Recurrence relation for the number of “references” to two mutually recursive function

I was going through the Dynamic Programming section of Introduction to Algorithms(2nd Edition) by Cormen et. al. where I came across the following recurrence relations in the assembly line scheduling portion.


$ (1),(2),(3)$ are three relations as shown.

$ $ f_{1}[j] = \begin{cases} e_1+a_{1,1} &\quad\text{if } j=1\ \min(f_1[j-1]+a_{1,j},f_2[j-1]+t_{2,j-1}+a_{1,j})&\quad\text{if} j\geq2\ \end{cases}\tag 1$ $

Symmetrically,

$ $ f_{2}[j] = \begin{cases} e_2+a_{2,1} &\quad\text{if } j=1\ \min(f_2[j-1]+a_{2,j},f_1[j-1]+t_{1,j-1}+a_{2,j})&\quad\text{if} j\geq2\ \end{cases}\tag 2$ $

(where $ e_i,a_{i,j},t_{2,j-1}$ are constants for $ i=1,2$ and $ j=1,2,3,…,n$ )

$ $ f^\star=\min(f_1[n]+x_1,f_2[n]+x_2)\tag 3$ $


The text tries to find the recurrence relation of the number of times $ f_i[j]$ ($ i=1,2$ and $ j=1,2,3,…,n$ ) is referenced if we write a mutual recursive code for $ f_1[j]$ and $ f_2[j]$ . Let $ r_i(j)$ denote the number of times $ f_i[j]$ is referenced.

They say that,

From $ (3)$ ,

$ $ r_1(n)=r_2(n)=1.\tag4$ $

From $ (1)$ and $ (2)$ ,

$ $ r_1(j)=r_2(j)=r_1(j+1)+r_2(j+1)\tag 5$ $


I could not quite understand how the relations of $ (4)$ and $ (5)$ are obtained from the three corresponding relations.

Thought I could make out intuitively that as there is only one place where $ f_1[n]$ and $ f_2[n]$ are called, which is in $ f^\star$ , so probably in $ (4)$ we get the required relation.

But as I had not encountered such concept before I do not quite know how to proceed. I would be grateful if someone guides me with the mathematical prove of the derivation as well as the intuition, however I would prefer an alternative to mathematical induction as it is a mechanical cookbook method without giving much insight into the problem though (but if in case there is no other way out, then I shall appreciate mathematical induction as well provided the intuition is explained to me properly).

How to compute the number of occurrences of a cron schedule over a time span?

For example, given a cron schedule such as: 0 * 1 7 6 and a time span, like the next year, can you directly compute the number of times the schedule will fire? It can be brute forced pretty trivially but I’d like to use this to sort a list so I’d rather not just brute force it. It’s pretty easy to compute the trivial cron patterns:

fn('* * * * *', 1 day) -> 60 * 24 fn('0,30 * * * *', 1 day) -> 2 * 24 

It’s easy up until the calendar gets involved with different length months and then you have to worry about days or the week coinciding with days of the month.

Use a Cell Phone Number Listing to Get the Truth Behind Your Spouse’s Strange Calls

Google will inform you that many people are currently the usage of the online reverse cellular phone appearance up directory today and  Phone Number List . There can be several reasons for utilizing the carrier among the ones the maximum common are finding out whom a prank caller is or if a spouse is cheating. Reasons range from all of us, but either manner what their motive, the manner they get entry to the online opposite cell cellphone research is the same manner.

[Image: Bahamas-Phone-List.jpg?w=1000&ssl=1]

An on line reverse cellular Bahamas phone number list  lookup provider is said to be the very nice manner due to its comfort and in cost as compared to the numerous other methods that could price you a fortune and are difficult to apply.

Among services provided to, you that provide the same facts’s as a opposite cell smartphone look up are as follows:

Detective – They will follow your accomplice and supply the desired facts however are you able to truly have the funds for what they’re going to charge for this? In addition, possibilities are your spouse will discover.

Reading the frame language of your partner- if you may do this you possibly might not have married them to start with.

Therefore, with the available options the handiest one that makes experience is the opposite cell telephone online lookup. Just honestly pay for a one-time search. Input the suspect number click on on seek now and within a few seconds, you may recognise who is at the other give up of that mysterious telephone call. You can ease your thoughts and both confront your partner or let dozing puppies lie.