what is difference between macbook and macbook pro

) {MapNewHashmap(); Premiumphone.put ("Apple", "IPhone"); Premiumphone.put ("HTC", "HTC One"); Premiumphone.put ("Samsung", "S5"); Iterator Iterator=Premiumphone.keyset (). iterator (); while(Iterator.hasnext ()) {System.out.println (Premiumphone.get (Iterator.next ())); Premiumphone.put ("Sony", "Xperia Z"); } } }"Main" java.util.ConcurrentModificationException at java.util.hashmap$hashiterator.nextentry (Unknown SOURCE) at Java.util.hashmap$keyiterator.next (Unknow

between them. More threads require more memory space. Threads may bring more "bugs" to your program, so use them with care. The termination of a thread requires consideration of its impact on the program's operation. Typically, block model data is shared across multiple threads, and it is necessary to prevent thread deadlock situations from occurring. Summarize:the

There has been a period of time in which Twitter has been replaced by micro-letters, and it turns out that this is not the case, that Weibo has not been replaced, it has been listed and is now worth 4 billion or 5 billion of dollars. In fact, early in the micro-blog just out of time, some people say that micro-Bo will replace QQ, now QQ is not the same running,

For wait and sleep it would seem to block threads, but they are really a big difference, so here's a little bit of discussion: Difference one, Sleep () is the method inside the thread, and wait () is the method of the object class.This is relatively simple, directly re

What is the difference between compilation and interpretation? The compiler compiles every statement of the source program into machine language and saves it as a binary file, so that the computer can run the program directly in machine language, which is very fast. And the interpreter

What is the difference between the server CPU and the normal CPU? Below we find a professional literature, quickly to increase knowledge. Overall, there are six main differences between the server CPU and the common computer CPU, so let's look at it together. One, the instruction set is different Home or employment

your extensions, such as the-x option in GCC. In fact, the header file with what is the extension does not have any impact, because no one will directly compile the header file, because the header file is only declared and not defined, but in the actual compilation process, # The header file used by the include pre-compilation command

PDO: ERRMODE_EXCEPTIONPDO: ERRMODE_WARNING what is the difference? After reading this, I think the formats of the feedback information are different. What else does it look like? That is, when I explain it, I have a word quot; throw quot;. Who can tell me

Millet Notebook Air 4G version and ordinary version what is the difference? A, the appearance contrast Millet Notebook Air 4G version in the appearance of basic and prior to the ordinary version of Millet notebook air appearance no different, is still divided into 12.5-inch small screen core and 13.3-inch display v

Who told me what is the difference between the PHP5 series and the PHP4 series? who told me what is the difference between the PHP nbsp; 5 Series and PHP nbsp; 4 Series? currently, I only find PHP nbsp;

the built-in flash memory of mobile phones has moved towards a ufs new era. Back to the external storage of mobile phones, but also rely on the "old" TF card (micro SD) for hard support, and it is not suitable for larger, more frequent audio, video and image file transfer work, mobile phone external memory card needs to upgrade a grade. What does a UFS memory card look like, and

A friend asked, what is the difference between padding and opacity, and when should you use the opacity? When should I use padding? Today @p big dot s Micro Bo to the students in a popular way to understand the difference between the two, the case vivid image, it is worth re

, messages, photos, SkyDrive, music, videos, and more. Windows RT is an operating system designed specifically for the ARM processor for mobile office use. The biggest difference with Windows 8 is the inability to install PC desktop software. The biggest benefit of Windows RT is low hardware requirements and long batt

://msdn.microsoft.com/library/default.asp? Url =/library/en-US/automat/htm/chap7_5alv.asp BSTR itself stores the length of a string: The length is stored as a 32-bit integer at the memory location preceding the data in the string. Top 4th floor Cn2000 ( Cainiao 2000 ) Reply 21:55:28 Score 0 Up... top 5th floor Cn2000 ( Cainiao 2000 ) Reply 10:39:42 Score 0 There is another problem: Tchar s

To discuss the difference between the structure (struct) and Class (class), what do you think the structure (struct) has to do with the class instead? --------------------------------------------------------------- Ask too many people, simply tidy up a FAQ. First of all, the question should be discussed only syntactically, and if there is a discussion of differ

Original linkIn the JavaScript world, there are two words that are often mentioned, that is shim and polyfill, what are they referring to, and what is the difference? In this article, we will briefly give you a brief introduction of their relationship and differences.ShimA s

What is the difference between the 32-bit and 64-bit Windows system? How do I determine 32-bit and 64-bit systems? Whether the computer architecture is 32-bit or 64-bit depends on the processor (CPU) inside the machine. Currently, most computer processors belong to one of these two categories. 64-bit processors are m

Today, when I was working on a job interview, David asked me to add a title: The difference between ID and name in HTML. A listen to Ah, the HTML ID and name what is the difference, but usually in use, not how to think, just so use it, oh, in fact, when doing the Web page there is