x620 10x

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How to become a "developer with 10 times efficiency (10x Developer)

Introduction: an article by Brad FeldThe rise of lower onomicsThe concept of "10 times the efficiency of developers (10 x Developer)" is mentioned in (Great developers tend to be much more efficient than general developers, not just a little bit ),

In fact, hackers are 10 times times more efficient engineers

(10 times Times efficiency) The programmer's concept for the first time was Fauré De Phillips Brooks (Brooks Law fame) "Note 1" in its article "No silver Bullet", "in the General Designer (programmer) and excellent designer (programmer), there are 10 times times more difference." The idea was widely debated, sometimes refuted, and most of it supported, not surprisingly, because it was impossible to accurately measure the productivity of a programmer.Sadly, 1

Improved search rule options in Snort 2.x data Zone

. statd packet with a long format string parameter to exploit the format string attack to obtain the root user permissions of the Linux system: Frame 3 (1118 bytes on wire, 1118 bytes captured)Ethernet II, Src: 00: 06: 5b: 9f: 95: 37, DST: 00: 01: 02: 86: A6: F3Internet protocol, Src ADDR: 192.168.5.223 (192.168.5.223), dst addr: 202.99.11.220 (202.99.11.220)User datateprotocol, Src port: 816 (816), DST port: 32770 (32770)Remote Procedure Call, type: Call Xid: 0x000088ef6Xid: 0x000088ef6 (111414

Software testing What you need to know (a) overview

error. There is also a program error is caused by changes in the operating environment, such as you replace the hardware, operating system and so on.Combined inputSoftware testing is not possible to test all possible inputs, so it is necessary to have a selective combination of inputs. This allows the user to use as few test cases as possible to expand the coverage of the test. The common input combinations are boundary value method, equivalence class method, decision table method, causality di

Sprintf usage overview and Examples

("% x",-1) # => ".. f"P sprintf ("% x", 1) # => "1"P sprintf ("% x",-1) # => "-1" - Back the output content to the left. If not specifiedWidthIt does not work. 0 When the output content is right-aligned, use '0' instead of a space to fill the excess part. It is only a numerical indicator ('D', 'I', 'B', 'O', 'x', 'x', 'U', 'F ', 'G', 'G') (invalid for 'e', 'E) P sprintf ("% 010d", 10)# => "0000000010" When used with

2nd: The charm of numbers--looking for a qualifying integer

being searched, this k-bit decimal number has a total of 2^k. Assuming that there are two numbers x, Y, and they are modulo n congruence, then x and Y will be expanded by four numbers when searching for k+1 decimal numbers consisting of 0 and 1:10X, 10x+1, 10Y, 10y+1. Because the X and Y congruence (congruence can be regarded as equal), so 10X and 10Y with the s

Best C # blogs (highly recommended)

on the code By Brandon cannaday, Charlie key, and Michael KUEHL, software engineers who graduated from the fabulous rose-Hulman Institute of Technology. these are three guys who work full time but in their spare time run their fledgling company. (recent post: C # snippet tutorial-performance timers) Non-C # blogs The following blogs are not C #-specific but nonetheless can be quite useful for C # developers: 10x Software Development By Steve McConn

Infinite Loop Fractional fraction,

into two kinds of cases, pure repeating decimal, mixed repeating decimaldecimal fraction Pure Repeating decimalExample:0.1111 ... 1 of the loop, we can set this decimal number to X, can get: 10x-x=1.1111......-0.1111 ... 9x=1x=1/9Example:0.999999.......=1 set x=0.9999999......10x-x=9.999999.....-0.999999.....9x=9x=1 on this aspect, can also use the limit of knowledge to prove, here is not repeat.Example: W

Guava Study notes: Immutable (immutable) collection

, Jerry, Harry, Lisa]imlist:[peida, Jerry, Harry, Lisa]imsortset:[harry, Jerry, Lisa, Peida]list:[0x, 1x, 2x,3x, 4x, 5x, 6x, 7x, 8x, 9x, 10x, 11x, 12x, 13x, 14x, 15x, 19x]iminfolist:[2x, 16x, 17x, 18x, 3x, 4x, 5x, 6x, 10x, 11x, 12x, 13x, 14x, 15x, 16x, 17x]iminfolistsize:16iminfoset:[4x, 5x, 6x, 7x, 8x, 9x, 10x, 11x, 12x, 13x, 14xIn this code, immutablelist.copyo

"Number" study--0.999 of the fans ...

not 0, this should be consulted on their own.Looking back at the different problems of different numbers, there is no problem, it is the error that the man produced when converting to decimal.other comments and my rebuttalInteresting to find some other views on the Internet, and give a seemingly unassailable counter-example.1) David Foster Wallace (David Foster Wallace) introduced another notable proof in his book "Everything and More": make x = 0.999 ... so

Pro/E set of various Curve Equations

springColumn CoordinateEquation: r = 5Theta = T * 3600.Z = (sin (3.5 * theta-90) 24 * tFigure 12. Linear line.Playing the cardEquation: A = 10X = 3 * a * t/(1 (t ^ 3 ))Y = 3 * a * (t ^ 2)/(1 (t ^ 3 ))Figure 23. helical curve)Cylindrical)Equation: r = TTheta = 10 t * (20*360)Z = T * 3Figure 34. Butterfly CurveSpherical CoordinatesEquation: FIG = 8 * tTheta = 360 * T * 4Phi =-360 * T * 8Figure 45. InvoluteCartesian coordinate systemEquation: r = 1Ang =

Vim Common operation

. L The cursor moves to the first character of the line at the bottom of the screen,l you write it down as the last abbreviation. G Move to the last line of this file (common) NG N is a number. Move to the nth row of this file. For example, 20G will move to line 20th of this file. Gg Move to the first line of this file, equivalent to 1G Ah! Common Second, delete, copy, paste, revoke X, X In on

Vim copy, Paste, delete, undo, replace, cursor move, etc. usage

in the central of the screen, and m you write it down as middle abbreviation. L The cursor moves to the first character of the line at the bottom of the screen, l you write it down as the last abbreviation. G Move to the last line of this file (common) NG N is a number. Move to the nth row of this file. For example, 20G will move to line 20th of this file. Gg Move to the first line of this file, equivalent to 1G Ah! Com

Digital square (hdu4394) Search

Digital Square Time Limit: 2000/1000 MS (Java/others) memory limit: 32768/32768 K (Java/Others)Total submission (s): 1310 accepted submission (s): 501Problem descriptiongiven an integer N, you should come up with the minimum NonnegativeInteger m.m meets the follow condition: M2 % 10x = n (x = 0, 1, 2, 3 ....) Inputthe first line has an integer T (t For each case, each line contains one integer N (0 Outputfor each case output the answer if it exists, o

Mathematical graphics (1.1) circle, elliptic

Circle vertices = 360w = from 0 to (2*PI)r = 10.0x = r*sin(w)y = r*cos(w) Circular Surface with texture coordinates and vertices vertices = D1:360 D2:100u = from 0 to (2*PI) D1v = from 0 to 10 D2x = sin(u)y = cos(u)r = (x+1)/2g = (y+1)/2b = v/10x = v*xy = v*y Elliptic vertices = 1000r = 10.0e = 0.75t = from 0 to (2*PI)p = r/(1.0 - e*cos(t))x = p*sin(t)y = p*cos(t) Randomly generated elliptic vertices = 360w = from 0 to (2*PI)a = rand2(1, 20)b = ra

Differences between VI and VIM editors in Linux and their usage

string from the first row to the last row, and replace the string with word2. A prompt is displayed before replacement to check whether the conform needs to be replaced (commonly used) Normal Mode: delete, copy, and paste X, X In a line of text, X is to delete a character backward (equivalent to a [del] button), and X is to delete a character forward (equivalent to [backspace], that is, the Return key) (commonly used) NX NIs a number and is deleted backward. NCharacters. For example, to delet

A detailed _php tutorial on floating-point (float) and integer (integer) data types in PHP

the part of the effective digit is always 1.xxxxxxx ... (23 x). Another area to be aware of is the exponential representation, which is stated in the IEEE754 by means of an offset exponent, meaning that the number in the digits minus 127 is the final exponent. Compare the exponent portion of the above figure to 01111100 and convert it to a decimal number of 124. Then subtract 127, the result is-3, which means that the exponent part is 2-3=1/8=0.125. What about the number of effective parts? Plu

Sony MZ-RH1 Hi-MD

., SonicStage management, no time limit‧ The audio content of the upper speaker can be quickly transferred back to the power supply through a USB flash drive., Or the computer downloads the content in the upper part to Hi-MD.‧ Can be used as an animated Disc‧ USB 2.0 10x 10x faster than 100●The latest G-PROTECTION anti-shock System●Battery battery pool with LIP-4WM, minimum 45-hour Speaker (Hi-LP Mode)● Hi-

Dual-barrel telescope

dual-tube telescope is suitable for daytime views, but it is not suitable for astronomical purposes because it cannot gather enough light. How can we know the diameter of the dual-tube telescope? Very simple.Each pair of dual telescope is labeled with a set of numbers such as 7x50. The first digit "7" on the dual telescope specification is the "magnification", and the second digit "50" is the diameter of the lens. The seven-fold model is a best-selling model that brings every item you watch clo

Delete, copy, and paste linux vim shortcut keys

Delete, copy, and paste linux vim shortcut keys Delete In lowercase, x indicates that a character is deleted backward, that is, the character where the cursor is located is deleted. Nx n indicates a number, indicating that each character is deleted backward. For example, 10x indicates that the last 10 characters including the cursor are deleted. X in uppercase indicates that a character before the cursor is deleted, excluding the character where the c

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