I started to read "programming language implementation mode" and learned the basics of Parser. English is on Wiki, and Chinese is translated by yourself.
Wiki LALR parserHttp://en.wikipedia.org/wiki/LALR_parser
In 1965, Donald Knuth successfully Ted the LR parser (Left to Right, Rightmost derivation ). the LR parser can recognize any deterministic context-free language in linear-bounded time. however, right
After using the Lightroom for a period of time, feel more and more slowly, or because of a wide range of work, hoping to improve the efficiency of LR? Here are 10 tips from the founder of SLR Lounge, a foreign website, without installing programs that can directly enhance the speed and efficiency of LR software (for reading convenience, Order of Change slightly):
(i) Increased speed of pick-u
1. The LoadRunner hinderedPerformance TestingPeople's understanding of the communication processI hope that the person who does the performance test can forget the tool. We all know that Vugen has a recording function, in fact, recording this function is a very bad choice for testing, is to follow the scene implementation brings a lot of uncertainty. Because some people do not understand the script, or do not know what the meaning of the script, resulting in some performance problems, helpless.
Before sending a group of antique films, many friends responded that I like this faint hue, hope to share some of the later ideas and experience. So I took the time to tidy up and write this tutorial. As with the previous tutorial ("Dream Christmas film of the late Thinking"), the basic tones are done in the LR, and then go to Ps to do some later adjustments. The difference is, this time also use alien Skin exposure film filter plug-ins, specific role
The late stage of normal star orbit
After the 3 floor, you have dozens of or even hundreds of of the sky map. Let me use a screenshot to show how to turn the stars into stars.
Personal habits, the first will be all the star rail once LR, because each star orbit are basically the same, so can be used with LR batch processing, processing 100 pictures about 6 7 minutes, very quickly.
You may ask me, why? Be
exception occurs and an response is received:Copy CPSR to spsr _ Set the appropriate CPSR bit:Change processor status to arm statusChange the processor mode to the corresponding exception ModeSet the interrupt prohibition bit to disable the corresponding interruptUpdate LR _ Set the PC to the corresponding exception VectorAt the same time, the processor automatically enters the arm status regardless of whether the exception occurs in arm or thumb. An
palette function.
Presets: Similar to "actions", you can record a series of editing actions and apply them to other photos.
Lightroom Powerful Preset Features
Disadvantages
No advanced editing Tool: As mentioned above, Lightroom can make basic adjustments to pictures, but lacks the editing tools like Photoshop and pixel level.
No layers: Photos cannot be edited hierarchically, but the brush feature can work with part of the pictu
ground and the sky is a typical brightness distribution of high-profile photography. Although some areas are messy and lack the overall style, it is not difficult to solve these problems in LR.
Post-process:
LR presets provide a very fast solution for our style. first, I select an image for processing, then copy the processing method, and grant the remaining thr
Photographer JP Danko wrote a teaching, so that everyone can use the simple method of the LR to get a sense of the color of the film, he said that the film industry has some idiomatic colors, the most common is the shadow of the screen with green or green, while the bright color of the warm, with PS can be the same colors, but with LR can store presets, batch adj
.
Lightroom intuitive interface for processing
Simple to use: very intuitive and simple palette function.
Presets: Similar to "actions", you can record a series of editing actions and apply them to other photos.
Lightroom Powerful Preset Features
Disadvantages
No advanced editing Tool: As mentioned above, Lightroom can make basic adjustments to pictures, but lacks the editing tools
mode 2
0x14 Reserved
0x18 external interrupt request (IRQ) external interrupt mode (IRQ) 4
0x1c fast interrupt request (FIQ) Fast interrupt mode (FIQ) 3
Except FIQ, only R13 and R14 special registers are available. Rn must be used to define these registers.
R13_svc rn R13
9.2 abnormal interrupt response process
9.2.1 arm response to abnormal interruptions
1. Save the current status of the processor, the interrupt shielding bit, and the flag of each condition.
2. Set the corresponding bits in
How to use Lightroom to make a big film
1. Pressure Dark sky Brightness
First, apply the picture to the third set of presets (the page has the last download link), quickly set the color tone.
Original film
At this time we found that the sky has been exposed, and then use the LR interface to the right of the gradient filter, fixed it on the horizon of the screen, appropriate to re
Several situations returned by arm exception interruptionsImportant basic knowledge: R15 (PC) always points to the instruction that is taking the finger, instead of the instruction that is executing or decoding. In general, it is customary to refer to the first instruction as a reference point, so PC always points to the third instruction. When the arm status is set, each command is 4 bytes long, so the PC always points to the command address plus an 8-byte address, that is, the PC value = the c
whose purpose is to recover HR from the LR image. The typical way to build HR today is to learn a lr-hr mapping, which is implemented by a deep network. These networks compute a series of SR feature graphs, with one or more upper sampling layers at the end to increase resolution and ultimately build HR images. Compared with the simple Feedforward method, human vision uses a feedback link to guide certain t
Read CatalogueOne: Understand the Babel configuration file. BABELRC Basic Configuration ItemsTwo: Configure Babel in WebpackBack to TopOne: Understand the Babel configuration file. BABELRC Basic Configuration Items1. What is Babel? What is it used for?ES6 is the next generation of JavaScript language standards released in 2015, which introduces new syntax and APIs that make it easier to write JS code, such as Class,let,for...of promise and so on, But unfortunately these new JS features are only
Babel
Official Introduction: Convert ECMAScript 2015 and later JavaScript code to an older version of the browser or to a backward-compatible version of the JavaScript code in the environment.
In short, it's about converting incompatible JavaScript code into a compatible, executable JavaScript code.
Function:
Syntax conversions
Add some compatibility Polyfill features
source code conversion, etc.
Simple Configuration preview:
{
"plugins": [], //plug-in configuration
"
4.7.4 Constructing LALR parsing TablesWe now introduce our last parser construction method, the LALR (LOOKAHEAD-LR) technique. This method was often used in practice, because the tables obtained by it was considerably smaller than the canonical LR Ta Bles, yet most common syntactic constructs of programming languages can being expressed conveniently by an LALR grammar. The same is almost true to SLR grammar
Let's start with some basic knowledge of arm assembly. (We take ARMV7 as an example, the latest iphone5s on the 64-bit is not discussed)
Basic Knowledge Section:
First you introduce registers:
R0-R3: For the transfer of function parameters and return values
R4-R6, R8,r10-r11: There is no special provision, is the general General register
R7: Stack frame pointer (frame pointer). Point to the address of the previous saved stack frame (stack frame) and link register (link register,
BL INIT_IRQ @ Call interrupt initialization function in init.c m SR cpsr_c, #0x5f @ set i-bit=0, open IRQ Interrupt Ldr LR, =halt_loop @ set return address Ldr pc, =main @ call main functionHalt_loop:b halt_loopHANDLEIRQ: SubLR, LR, #4@ Calculate return address Stmdb sp!, {R0-R12,LR} @ Save used register @ Note, at this time s P is the interrupt mo
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