what you don t know can hurt you

... groups told him that despite the fact that the TA had virtually wiped out graffiti on the trains, about 20 percent of the respondents said it was still there Things had gotten so bad, people didn t ... that we can admit that dirty little secret Cops often lie for what they consider to be the greater good They lie to get around the exclusionary rule The Constitution as interpreted by the U.S ... tourists a year.31 The objective, following Kelling, is an attempt to prevent deterioration to the point that higher crime rates will almost surely follow As he puts it, it is an attempt that...

Ngày tải lên: 05/03/2014, 20:20

... all the steps that led up to it? Chapter 7, “Knowing What You Know showed you how to know when you know for sure You know that you know the material when you have: 60 KNOWING WHEN YOU DON T KNOW ... Street And you re always using what you know to help you find the answers to what you don t know 62 KNOWING WHEN YOU DON T KNOW Here’s an example of how you use what you know to help you create ... the steps it takes to get there But notice that this clear picture and order don t come out all at once You have to take it one step at a time, just as if you were following the directions to Adams...

Ngày tải lên: 02/11/2013, 18:20

Ngày tải lên: 31/07/2014, 08:21

... other patterns for better places to store state besides the function object But for just a moment, we’ll explore that pattern, to illustrate how this doesn t let a function get a reference to ... it whatever you want Whatever you call the variable, the easiest way to set it up as totally empty is Object.create(null) (see Chapter 5) Object.cre ate(null) is similar to { }, but without the ... could say that the obj object “owns” or “contains” the function reference at the time the function is called Whatever you choose to call this pattern, at the point that foo() is called, it’s preceeded...

Ngày tải lên: 01/08/2014, 15:57

... He insists, and you reluctantly agree, that you can 't trust them anymore (that's what bit you) , and that you' ll need to figure out how to protect the checkout code from such a vulnerability again After some tinkering, you implement some simple ad hoc code like the following, which the team seems happy with: ... manage concurrency: lack of sequentiality and lack of trustability Now that we understand the problems more intimately, it's time we turn our attention to patterns that can address them The issue we want to address first is the inversion of control, the trust that is so fragilely held and so easily lost ... Second, and more importantly, callbacks suffer from inversion of control in that they implicitly give control over to another party (often a third-party utility not in your control!) to invoke the continuation of your program This control transfer leads us to a troubling list of trust issues, such as whether the callback is called more times than we expect...

Ngày tải lên: 22/11/2016, 17:55

... Prototype Methods Object Object.is( ) Static Function Object.getOwnPropertySymbols( ) Static Function Table of Contents | v Object.setPrototypeOf( ) Static Function Object.assign( ) Static Function ... both a getter and setter (again for compat reasons), but there are definitely better options See the this & Object Prototypes title of this series for more information For setting the [[Prototype]] ... understanding by exposing you to the new and unknown The intention is to evolve your knowledge in step with your tools by bestowing you with new capabilities It exists to give you the confidence to...

Ngày tải lên: 22/11/2016, 17:55

... http://facebook.com/oreilly Follow us on Twitter: http://twitter.com/oreillymedia Watch us on YouTube: http://www.youtube.com/oreillymedia Check out the full You Don t Know JS series: http://YouDont ... functionexpression The easiest way to distinguish declaration vs expression is the position of the word function in the statement (not just a line, but a distinct statement) If function is the very first thing ... scope you want, and you can name the parameter(s) any‐ thing that suits you This is mostly just stylistic choice Another application of this pattern addresses the (minor niche) con‐ cern that the...

Ngày tải lên: 22/11/2016, 17:55

... other patterns for better places to store state besides the function object But for just a moment, we’ll explore that pattern, to illustrate how this doesn t let a function get a reference to ... we can inspect the internal subtype by borrowing the base default toString() method, and you can see it reveals that strObject is an object that was in fact created by the String constructor Type ... that points to, for instance, the DOM element that triggered the event While that may sometimes be useful, other times it can be downright infuriating Un‐ fortunately, these tools rarely let you...

Ngày tải lên: 22/11/2016, 17:55

... setTimeout( ) function returns a numeric value (the unique identifier of the timer interval, if you wanted to cancel it), but we want to void that out so that the return value of our function doesn t ... also returns "object" from the typeof check So what s the seventh string value that typeof can return? typeof function a(){ /* */ } === "function"; // true It’s easy to think that function would ... information arrays are numerically indexed (as you d expect), but the tricky thing is that they also are objects that can have string keys/proper‐ ties added to them (but which don t count toward the...

Ngày tải lên: 22/11/2016, 17:56

... of creating output that you can see is to run an alert( ) statement For example: alert( b ); If you run that, you ll notice that instead of printing the output to the console, it shows a pop-up ... with that mode of thinking, it can be quite confusing at first Take some time to practice counting starting with to become more comfortable with it! The conditional is tested on each iteration, ... console.log( amount ); // 199.98 } We’ll explain if statements in the next section, but as you can see, the { } block with its two statements is attached to if (amount > 10); the statements inside the block...

Ngày tải lên: 22/11/2016, 17:56

... :should to go :went to see :saw to write :wrote to speak :spoke to say :said to tell :told to get :got to come :came to feel :felt to know :knew to let :let to lend :lent to hear :heard to hold ... dùng thể phủ định, ta không dùng donot để vi t mà dùng not to Câu vi t tiếng Anh sau: I want you not to forget that Unit 20 Date and time (Ngày tháng thời gian) Date Date ngày tháng, nh t kỳ ... Khi vi t thể phủ định thêm not sau will shall Khi vi t thể nghi vấn chuyển will/shall lên trước chủ t will/shall thường vi t t t thành ‘ll will not vi t t t thành won t shall not vi t t t thành...

Ngày tải lên: 19/06/2014, 18:20

Ngày tải lên: 06/08/2014, 19:21

... Truths!!! What they Don' t teach in Manuals!!! By Ankit Fadia For this exploit, you need to have local access to the machine, which has the Netzero software installed This vulnerability cannot ... Anyway, almost always the main motive behind getting root on a system is to get the password file Once you get the Hacking Truths!!! What they Don' t teach in Manuals!!! By Ankit Fadia Router password ... right? Well, almost The part of the encryption algorithm used by Netzero which is difficult to understand, is that two encrypted characters replace each character of the plaintext password These...

Ngày tải lên: 25/03/2014, 10:53

... BETTER STORY The five people in Chapter One were shifting to a better story about how things work These weren t entertainment stories They were stories about what causes things to happen The stories ... attention for the next few years I didn t foresee that I was going to get drawn into a mystery Actually, I got drawn into two mysteries The first was, What sparks an insight? What happens that ... how the situations they encountered t the patterns they had learned The pattern-matching part of their decisions was fast and automatic It was how they used their intuition to quickly identify...

Ngày tải lên: 19/07/2014, 06:33

... if you don t pay your bills What Creditors Can Do if You Can t Pay Note: If you don t pay your utility bill, the utility company will probably cut off your services and start legal action to ... writing that the matter has been settled Pay the claim You can pay the claim and related costs to the court, or directly to the creditor or his representative Make sure you get a receipt The ... What Creditors Can Do if You Can t Pay Can you stop a seizure? GARNISHMENT Talk to your creditor immediately If you can start paying some of the money that you owe, the creditor may leave the...

Ngày tải lên: 15/03/2014, 10:20

Ngày tải lên: 25/03/2014, 11:22