Maatkit tool, there will be a mk-duplicate-key-checker command, this command is used to detect duplicate indexes in the database and automatically generate statements for deleting duplicate indexes, which is very convenient.The following describes how to install the Maatkit tool and how to use the mk-duplicate-key-checker command.Maatkit tool installation: wget http://maatkit.googlecode.com/files/maatkit-7
useful Maatkit tool. after installing the Maatkit tool, there will be a mk-duplicate-key-checker command, this command is used to detect duplicate indexes in the database and automatically generate statements for deleting duplicate indexes, which is very convenient.
The following describes how to install the Maatkit tool and how to use the mk-duplicate-key-checker command.
Installation of Maatkit tool: wge
Suppose you have a form like this:
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id
=
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method
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action
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onSubmit
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" Return Checker () "
>
type
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type
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; } }
The following is a mock object:
public class MockSystemEnvironment implements Environmental { private long currentTime; public long getTime() { return currentTime; } public void setTime(long currentTime) { this.currentTime = currentTime; } public void playWavFile(String fileName) { playedWav = true; } public boolean wavWasPlayed() { return playedWav; } public voi
, which requires that the field value be within the specified range; otherwise, the verification fails. The minlength parameter specifies the minimum length and the maxlength parameter specifies the maximum length, the TRIM parameter specifies whether to remove spaces before and after the string before verifying the field)
RegEx (Regular Expression validator, which checks whether the verified field matches a regular expression. The expression parameter specifies the regular expression, and the
Paip. Best practices for front-end loading time analysis1. Save As to view the file size... and images.2. view the htm static files saved as a single load, view the time... can eliminate programming language problems and database ..# Effect of page loading speed on User Experience.Within 1 second, the best ..5 seconds,> 5 seconds, bad ..# IndexI. Google's best Web optimization practicesIi. Yahoo's best Web optimization practices2. Server Optimization4. CSS Optimization5. JavaScript OptimizationA
", "isNonEmpty "));
So how can we avoid problems in the above Code? According to the policy mode, we can encapsulate the same working code into different classes separately, and then process them through a unified policy processing class. OK, let's first define the Policy Processing class. The Code is as follows:
Var validator = {// all the places where the verification rule processing class can be stored, and types :{} will be defined separately later. // the error message messages correspondin
Use TCMalloc stack check and tcmalloc stack check
In the previous article TCMalloc: Malloc of thread buffer, the working principle and characteristics of TCMalloc are explained in detail. Today, we translate heap-checking using tcmalloc to learn more about Tcmalloc stack check.1. Automatic Memory leakage check
This technical document describes how to use the C ++ program to check the stack. This capability is very useful for Automatic Memory Leak Detection.1.1 link stack
required. As you can see, various verification rules are easily modified and replaced. If the requirement changes in the day, we recommend that you change the character length to 60 characters. I want to finish this job soon. Let's take another example: if anyone who has read the jQuery source code is familiar with this code, it also has a common feature that the interfaces are consistent, and the Operations completed are all intentional operations, the difference is that values are operated in
research institute, aims to improve a computer system used to automatically prove mathematical theorems that few people have actually worked with in this language before. But Minsky, who had come into contact with OCaml at the time of the study, thought the language could replace those of the Jane Street trading system. One of the major selling points of OCaml is its "type system", which is a bit like the word's grammar checker, except that the gramm
Honor v8 operator is 2499 yuan, while that of the 2799 p screen and NFC version of China Netcom is yuan, while that of the 2 K screen and NFC version is yuan, it was available at a.m. on July 15, May 17, 2016 at Huawei Mall and Jingdong. The evaluation shows that the Qilin 950 processor has high performance on 2 K screens.Huawei Honor v8 adopts 3D cutting-beam, arc CNC technology and micron-level sand blasting technology. Huawei glory v8 is equipped with ceramic white, rose gold, Ice Silver, ch
and VoLTE)
Operating system
Coloros 3.0 (based on Android 6.0)
Futouch OS 2.5 (based on Android 6.0)
Fuselage size
153x74.3x6.58mm (145g)
147.3x71.85x7.24mm (151G)
Body color
Gold, rose, gold, black.
Grey, black, gold, rose gold
Reference price
2799 Yuan
2498 yuan /2798 yuan
Mobile Features
Solid State fingerprint identification, metal fuselage, VOOC flash
, can see from the parameters of what difference.
Comparison of R9 parameters between Millet 5s and Oppo
Contrast model
Millet 5s
OPPO R9
Screen size
5.15-Inch 1920x1080 resolution
5.5-inch 1920x1080 pixel (Super AMOLED)
CPU model
Gaotong Dragon 821(Low frequency edition)
MediaTek Helio P10 (648 core)
RAM memory
3gb/4gb
4GB
ROM Storage
64gb/128gb
64GB (maximum support 128G ex
(single card, supporting Volte) Operating system Official version of iOS 10 Body size 138.3x67.1x7.1 (138g) 158.2x77.9x7.3 (188g) Body color Rose gold, gold, silver, black, bright black Special features Metal body, fingerprint recognition, IP67 Metal body, fingerprint recognition
Parameters The party must look, preliminary understand the charm Blue Max and the Phantom Blue E Hardware Specification parameter contrast situation, details below.
Charm Blue E and the charm Blue Max parameter contrast
Contrast model
Charm Blue E
Charm Blue Max
Screen specifications
5.5-inch 1920*1080
6-inch 1920*1080
CPU model
MediaTek Helio P10 (64-bit eight-core)
RAM memory
3GB
3GB
R
Comparison of parameters
For the attention of mobile phone friends, most users are more interested in parameters, the following is the Red Meter Pro and the Phantom Blue Note3 configuration parameters in detail, as shown in the following table.
Comparison of Note3 parameters between red-M pro and the charm family
Contrast model
Red M Pro
Charm Blue Note3
Screen specifications
5.5-inch 1920x1080 pixel
CPU model
MediaTek Helio
screen size and the phone's other hardware performance is not directly related to the size of the mobile phone screen does not mean that other mobile phone components will also shrink. Although the IPhone SE only has a 4-inch screen, it uses the same accessories as 6s for many components, while the Nubia Z11 Mini uses a 5-inch screen size, but it can still match the other brand's flagship products in terms of camera, memory and craftsmanship, such as the camera, Z11 The Mini and Xiaomi 5 flagsh
technology, a change to the previous identification of the normal, so that users through the fingerprint after the lock does not need to adjust the grip posture. Small series to test its fingerprint unlock speed accurate seconds open, in the fingerprint recognition device so narrow, it is difficult to let people understand it has so fast and accurate rate. In the camera aspect, the front uses 4 million pixel camera and has the video beauty function, after the 16 million pixel camera supports th
It will be the end of this year, Huawei has put a big move, launched the glorious Magic mobile phone. Presumably a lot of people have already started. The first thing to start with is to install a SIM card. So, how about the Glory Magic SIM card? Below, and small weave together to see the Glory Magic installed SIM card method.
First, Glory Magic Card information:
Network format
Network, the Glory Magic is a full netcom smartphone, and support dual-card double, while supporting Mobile, Unico
In front, we analyzed the initialization of dctracker, we have seen, in the Dctracker construction method, the call has the following method
private void Registerforallevents () {mPhone.mCi.registerForAvailable (this, dctconstants.event_radio_available, null
);
MPhone.mCi.registerForOffOrNotAvailable (this, dctconstants.event_radio_off_or_not_available, null);
MPhone.mCi.registerForDataNetworkStateChanged (this, dctconstants.event_data_state_changed, null); Note, this is fragile-the
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