"I get up late in the morning"  --- In this sentence we have used 'in' before morning   "I get up early on weekdays" --- In this sentence we have used 'on' before weekdays.    Please let me know why we use 'on' for 2nd sentence and why we used 'in' for 1st sentence.
Which one is correct? (Maybe both are correct.)     He passed away on the morning of March 5.   Or      He passed away in the morning of March 5.
Way to go from recursion to iteration I've used recursion quite a lot on my many years of programming to solve simple problems, but I'm fully aware that sometimes you need iteration due to memory/speed problems.  So, sometime in the very far past I went to try and find if there existed any "pattern" or text-book way of transforming a common recursion approach to iteration and found nothing. Or at least nothing that I can remember it would help.   Are there general rules? Is there a "pattern"? Writing conditional (if/then) statements into ArcGIS Field Calculator using Python Parser? I have gotten stuck on seemingly simple ArcGIS field calculator python expression.  I obtained a great answer to a another similar question a few years ago: . Now I need to populate a new field based on 6 ranges of values (bedrock depth).  My attempt at writing this expression is below:    I just need to populate the empty field "bedrockdp" using the ranges in the toc called brockdepmin.     Pre-Logic Script Code:  def !GRIDCODE! (value):     if value &gt;0 and value &lt; 50:         return "0 - 50 cm from the surface"     else:         return "n/a"   bedrockdep =  GRIDCODE (!bedrockdep!) Minimum file permissions to rename file I put a 64-bit ELF file in my unprivileged user's home directory. I wonder which permissions do I need to have only possiblity to rename this file being logged in as unprivileged user. From what I understand I only need execute permission for user to whom file belongs to, set for parent's directory. Is that right?  So if path to my file is /home/Simon_dir/zip and I wrote chmod 0100 /home/Simon_dir and file permissions are set to 0000, should I have rights to rename the zip file being logged in as unprivileged user? Executing a certain action for all elements in an Enumerable Why is the application of probability in QM fundamentally different from application of probability in other areas? This is what happens:  sudo apt-get install vlc Reading package lists... Done Building dependency tree        Reading state information... Done E: Unable to locate package vlc   Please help. I would also like to know when this error occurs, I've seen it before too. Do reroll and dice-adding abilities work on critical hits and critical failures? Why did the Nazgûl not attack a second time at Weathertop? Evaluation of $\lim_{n\rightarrow \infty}\frac{1}{2n}\cdot \ln \binom{2n}{n}$ Avoid large spaces between text and equations I use the options  \renewcommand{\baselinestretch}{1.25} \setlength{\parskip}{0pt} \setlength{\parindent}{0pt}    in the preamble of my document and most of the time the document looks like intended. Once in a while though, especially when I use multiline-equations, I get huge spaces right before and after the equation and the surrounding text, for example:    Is there any way I can avoid that without removing the \parskip option? Shape gets distorted when adding stroke in Illustrator CS6 I very recently started learning how to use Adobe Illustrator (CS6), and just now I noticed something strange. When I add a 1pt stroke to my shape, it gets slightly distorted. This distortion does not disappear if I remove the stroke. (But only if I remove the stroke by setting its weight to 0. Using CTRL+Z does return the shape to its former state.)  After adding and removing the stroke a few times, the difference becomes quite noticable:   Am I doing something wrong? Is it a bug? I can't imagine this being the expected behaviour.  EDIT: I think I figured it out. Appearantly, turning 'Align to pixel grid' off doesn't affect previous shapes. If I turn it off and then recreate my shape from scratch, the problem is fixed.   However, I was wondering if their is a way to disable the effect for existing shapes. In other words, can I 'fix' the shapes I created while 'Align to pixel grid' was still on? So our 6-month-old boy still doesn't sleep through the night. He still wakes up at least once and wants to eat.  He takes 3 naps during the day, ranging from 30 minutes to 1.5 (sometimes 2) hours.  We usually put him down for the night at least 2 hours after his latest nap, but we haven't been able to get him down to 2 naps per day because he gets pretty cranky during the evenings. Depending on the duration and times of his naps, his bedtime ranges between 10 and midnight.  We have started feeding him a small amount (2 tablespoons dry) of rice cereal after his morning and evening naps in the hopes that he'll have a fuller stomach through the night, but he still wakes up hungry after sleeping between 3 and 6 hours. I can handle the 6 hours, since that means I get 6 hours of pretty much uninterrupted sleep, but it's usually more like 3-4.  Any suggestions? Do I need to take my weight off the bike to lock out the suspension? Warning: mysql_fetch_* expects parameter 1 to be resource, boolean given error In Python, how can I parse a numeric string like "545.2222" to its corresponding float value, 545.2222? Or parse the string "31" to an integer, 31?  I just want to know how to parse a float str to a float, and (separately) an int str to an int. Existence of subgroup of order six in $A_4$ Show that  the  alternating  group  $A_4$  of all even permutations of $S_4$ does not contain a  subgroup of order $6$.   For me am thinking to write all elements of $A_4$ and trying to find every cyclic subgroup generated by each element of $A_4$, then I have to check whether there exist such a subgroup or not! This is a long procedure for me, I ask if there is a short way to do this. How to set the default value of an exposed filter rather than -Any-? I have a view with exposed filters in Drupal 7 and I need to set the default value of a filter to current year. I also need to unset/remove the - Any - option from the select list. If HTML, CSS, and Javascript are client-side, why are they components of a PHP file? Is an empty set equal to another empty set? What software do you use to accurately draw geometry diagrams?