A context is just some information. They will usually be QuerySets, but they could be anything. They will be available from within your templates. Oh, and they are a breeze to make.
When building my site I wanted to have a selection of random entries available on the navigation bar on each page, lets look at how we can do this with a context.
Contexts are simply functions that take one argument, request, and return a dictionary of values. The one I wrote looks like this:
Seashore is an open source image editor for Mac OS X's Cocoa framework. It features gradients, textures and anti-aliasing for both text and brush strokes. It supports multiple layers and alpha channel editing. It is based around the GIMP's technology and uses the same native file format.
However, unlike the GIMP, Seashore only aims to serve the basic image editing needs of most computer users, not to provide a replacement for professional image editing products.
At home during a calm period, tell the child you're going to play a game. "You say, 'I'm going to pretend to say no and you're going to have a tantrum, but you're not going to hit or throw things. If you can do that, we're going to walk over to the refrigerator and put a star up on your chart,' " which can be turned in for a reward, such as a favorite food or TV time.
"You remind the child it's pretend and then do it. If a child complies, you say, 'I can't believe it, you just stood there when I said no and didn't throw things.' Then you say, 'I bet you can't do it again.' And when the child does, you praise and give another star. If the child fails, you say calmly, 'Okay, no star this time because you threw things. We'll try again later.' "
Read on past the jump for one of the gems that turned up, showing Gates in the role of chief rabble-rouser. (Original document: PDF, 5 pages.) It shows that even the Microsoft co-founder -- who champions the "magic of software" -- isn't immune to the frustrations of everyday computer users.
The lack of attention to usability represented by these experiences blows my mind. I thought we had reached a low with Windows Network places or the messages I get when I try to use 802.11. (don't you just love that root certificate message?)
Suppose we want to generate the running sum series r formed by sums of n consecutive elements taken from a series s. For example, to sum consecutive pairs taken from the first 6 integers:
>>> n = 2 >>> s = 0, 1, 2, 3, 4, 5 >>> running_sum(s, 2) [1, 3, 5, 7]
Ryan Hahn asks:
In the case of microfinance, however, it seems to me the problem of limited liability is rearing its ugly head. Poor borrowers generally have little or no collateral, so they usually have little reason to avoid a strategic default.
It is a common myth that microfinance loans have no collateral.
Exxon Mobil, Shell, Total and BP — the original partners in the Iraq Petroleum Company — along with Chevron and a number of smaller oil companies, are in talks with Iraq’s Oil Ministry for no-bid contracts to service Iraq’s largest fields, according to ministry officials, oil company officials and an American diplomat.
..Yet at today’s oil prices, there is no shortage of companies coveting a contract in Iraq. It is not only one of the few countries where oil reserves are up for grabs, but also one of the few that is viewed within the industry as having considerable potential to rapidly increase production.
If a presidential campaign is intended to be a test-run for the presidency, his chief priorities are the words in his speeches, messages in his television advertising and policy pronouncements. On other matters, even if he disagrees, he often allows himself to be overruled.
Mr. Obama was not thrilled with a campaign slogan, “Change We Can Believe In,” that was unveiled last September. And he did not initially like the campaign’s blue and white logo — intended to appear like a horizon, symbolizing hope and opportunity — saying he found it too polished and corporate.
OK, so what’s the conclusion here? People are scared of sharing their unfinished work, plain and simple. I know this isn’t headline news to most people, but I really think I’ve been in deep denial about this. I’m so used to throwing my creative output up for constant criticism, that I simply expect everyone else to do it as well. I think of it as the norm, and I can’t comprehend why someone wouldn’t want to do that… and yet clearly, the growing popularity of distributed version control shows just how thrilled people are to hide their work from each other. It’s the classic “testimonial” for systems like git (taken from a blog comment):
“Don’t tell me I should cooperate with other people at the beginning and publish my modification as early as possible. I do cooperate with other people but I do want to do some work alone sometimes.”
Hm, okay. Please just don’t work alone for too long!
Swivel's mission is to make data useful.
If you're curious about data, Swivel is the place for you.
The agents of destruction are many. State governments have played a role. They aggressively hawk their lottery products, which some people call a tax on stupidity. Twenty percent of Americans are frequent players, spending about $60 billion a year. The spending is starkly regressive. A household with income under $13,000 spends, on average, $645 a year on lottery tickets, about 9 percent of all income. Aside from the financial toll, the moral toll is comprehensive. Here is the government, the guardian of order, telling people that they don’t have to work to build for the future. They can strike it rich for nothing.
First, raise public consciousness about debt the way the anti-smoking activists did with their campaign. Second, create institutions that encourage thrift.
Trixie Tracker is an easy-to-use web and mobile tool to help parents uncover and understand patterns in their baby's sleep and daily schedules. Trixie Tracker lets you create visually striking charts for...
Gasoline prices reached a national average of $4 a gallon for the first time over the weekend, adding more strain to motorists across the country. But the pain is not being felt uniformly. Across broad swaths of the South, Southwest and the upper Great Plains, the combination of low incomes, high gas prices and heavy dependence on pickup trucks and vans is putting an even tighter squeeze on family budgets
The disparity between rural America and the rest of the country is a matter of simple home economics. Nationwide, Americans are now spending about 4 percent of their take-home income on gasoline. By contrast, in some counties in the Mississippi Delta, that figure has surpassed 13 percent.
Posted by Tim at 07:57 AM | TrackBackWant to wean us off oil? Be open and honest. The British are paying $8 a gallon for petrol. Goldman Sachs is predicting we will be paying $6 by next year. Why have the extra $2 (above the current $4) go abroad? Have it go to the U.S. Treasury as a gasoline tax and be recycled back into lower payroll taxes.
Announce a schedule of gas tax hikes of 50 cents every six months for the next two years. And put a tax floor under $4 gasoline, so that as high gas prices transform the U.S. auto fleet, change driving habits and thus hugely reduce U.S. demand -- and bring down world crude oil prices -- the American consumer and the American economy reap all of the benefit.
For the first time in history, a sizable and growing number of U.S. combat troops are taking daily doses of antidepressants to calm nerves strained by repeated and lengthy tours in Iraq and Afghanistan. The medicines are intended not only to help troops keep their cool but also to enable the already strapped Army to preserve its most precious resource: soldiers on the front lines. Data contained in the Army's fifth Mental Health Advisory Team report indicate that, according to an anonymous survey of U.S. troops taken last fall, about 12% of combat troops in Iraq and 17% of those in Afghanistan are taking prescription antidepressants or sleeping pills to help them cope.
In some ways, the prescriptions may seem unremarkable. Generals, history shows, have plied their troops with medicinal palliatives at least since George Washington ordered rum rations at Valley Forge. During World War II, the Nazis fueled their blitzkrieg into France and Poland with the help of an amphetamine known as Pervitin. The U.S. Army also used amphetamines during the Vietnam War.
On a talk show last fall, a prominent political analyst named Mikhail G. Delyagin had some tart words about Vladimir V. Putin. When the program was later televised, Mr. Delyagin was not.
In a still frame from video, the incomplete digital erasure of a Putin critic named Mikhail G. Delyagin from an episode of the program "The People Want to Know" can be seen. Mr. Delyagin's leg and hand remain visible, to the right of the man holding the microphone. Not only were his remarks cut — he was also digitally erased from the show, like a disgraced comrade airbrushed from an old Soviet photo. (The technicians may have worked a bit hastily, leaving his disembodied legs in one shot.)
The UAV—known as a Shadow—had spotted children going in and out of the building. "We knew the bad guys were there," Williams said. "We saw them walk in and out, we saw them place the [missiles] … We could have serviced that building and we probably could have killed four or five of the guys that were involved in it.
But the decision was made at the command level—because of the women and children who were potentially in that building—not to service the target."
..In the tribal areas of Pakistan and Afghanistan, village mothers have been known to use the threat of a Predator attack to get their children to behave: "Obey or the 'buzz' will come after you."
In anticipation of China’s debut as an Olympic host, officials here have seized the opportunity to prove their country is a world power in sports. Rowing is at the heart of China’s plan to capture, for the first time, more gold medals than any other nation at the Olympic Games.
Grinko, 62, called it a priority for the Chinese to focus on sports like rowing that offer many gold medals, unlike basketball and soccer. The Summer Games in Beijing include 14 rowing events — 14 chances to for China to win gold and prove itself on home soil.
