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 ),
(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
. 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
common practice, Baidu search a bar, a lot of. After unpacking, you will get some pictures, a lot. Today I looked for some imitation of the source of friends have also made a, feel good, but not much of their swing, reluctantly completed a login interface. Put out pictures, there is a picture for the cardOne. Blueqq2010 own painting, resource images from the official QQTwo. Official QQ2010is still relatively close, but not up to the original effect.
Original link: http://www.orlion.ga/578/The Android system offers three ways to simply implement data persistence, namely file storage, Sharedpreference storage, and database storage. Of course, in addition to these three ways, you can also save the data in the phone's SD card, but the use of files, sharedpreference or database to save the data will beis simpler and more secure than storing data in an SD cardOne, the file storage1. Store data in a fil
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
restart/etc/init.d/network restartFQDN Full qualified Domain Name/etc/resov.conf DNS resolver Specifies DNSHostname Define host name View host nameHostname name defines host name/etc/sysconfig/network define the host name of the system settingsNetworking=yes|no restrict access to the Internet. Yes can surf the internet, no can not surf the Internet.Hostname= system is still active after rebootAgteway define the gateway scope must be a network card is generally based on the network
("% 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
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
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
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
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
.
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
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
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
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
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
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