Linux system Gentoo installation KDE5 how to set up
Configuration method:
1, add KDE overlay:
Layman-a KDE
Echo-e "-qt5" >>/etc/portage/profile/use.stable.mask
Or add QT5 to the/etc/portage/make.conf use.
2, the lifting of Kde5 mask
Method One: Make soft links in the official wiki:
Cd/etc/portage/package.accept_keywords
Ln-s/var/lib/layman/kde/documentation/package.accept_keywords/kde-frameworks-5.9.keywords
Ln-s/var/lib/layman/kde/documentation/package.accept_keywords/kde-plasma-5.2
rude to write a line of code without finding the root cause. This example is also a good illustration of five reasons for the benefits of CSS, not only to find the root cause of the problem, but also to make our intention to write CSS more clearly. In this way, the problem of class naming is also solved, padding-right should be 0 of the element is the container of that control, so it is easy to come up with the name "Widget-container", because throug
the phone?! I said aloud, "I have forgotten the N years ago, but I can tell you, my last time on QQ on the probably 1个小时34分 also spent 3 yuan, I QQ has #¥#¥¥#¥! ¥¥, my QQ avatar and ¥%¥¥%%, I changed n times password, each time is%%......%# ... Said my saliva transverse fly, red, sweltering ... After that, I gasped and looked around, startled! Next to the people are puzzled to stare at me, and some still do not know what to whisper ... Pay such a huge image cost of course has the harvest! Final
The concept of regular expressions
Regular expressions, also known as formal representations, general representations (English: Regular Expression, often abbreviated as regex, RegExp, or re) in code, a concept of computer science. A regular expression uses a single string to describe and match a series of strings that conform to a certain syntactic rule. In many text editors, regular expressions are often used to retrieve and replace text that conforms to a pattern.
In daily work, we often wri
Virtual machine for a lot of test or in the study of the people in the test is a frequent, often use, but after the virtual machine restarts, many people encounter virtual machine IP changes, is a headache, I also encountered this problem in the learning process, Baidu a lot of ways, some methods for the network knowledge Small white is a little difficult, There are some sharing experience has not worked, after trying, summed up two simple rude, pro-t
.
Ouke, although simple and rude, but based on no more time to deal with more specific reasons for this situation, but now that the problem has been solved, and install a new wine and longene QQ2015 pack away wine1.7 and no conflict, and you can use the latest wine to play with other Windows programs, is also harmless, fun ah O (∩_∩) o hahaha ~#!/bin/bashset-eexportlang=zh_cn.utf8#longenedirlongene_dir=/opt/longene#wineprogram maindirwine_dir= $L
Recently, some of the online memory-intensive applications are more sensitive. At the peak of the visit, the occasional kill drops, causing the service to restart. The discovery is triggered by the mechanism of Linux out-of-memory Kiiler.Http://linux-mm.org/OOM_KillerOom Kiiler will kill the memory in turn when the memory is tight, the process is high, send signal (SIGTERM). and recorded in the/var/log/message. There will be some records such as pid,process name. CPU Mask,trace and other informa
failure must be illegal pod operations, depending on the situation.
C Memory Layout (pod type) operations
1) dynamic application and releaseThe encapsulated Memalloc function checks whether the requested type meets the pod requirements. The release operation is relatively straightforward, and the encapsulated Memfree function directly calls the C language free.There are no is_pod functions in the VS2005 and 2008 standard libraries, which can be replaced with the is_pod function of
Https://github.com/spring-projects/spring-frameworkThe first kind, simple and rude directhttp://repo.springsource.org/libs-release-local/org/springframework/spring/3.2.4.RELEASE/ Spring-framework-3.2.4.release-dist.zipStick directly to the Address bar or download tool, each time there is an update as long as the version number can be;The second Kindhttp://repo.springsource.org/libs-release-local/Stick this in the address bar and you'll see a tree dire
Java program in many cases as a service program, under the Un*x platform can be used after the command "" to run the program as a background service, but under Windows as the Console window on the desktop, you have been worried about other at the same time you The console window is closed? Do you miss the Win32 service program written by VC?Turn on JBoss, Tomcat's release package and discover that they all use an open Source--java Service Wrapper. With the Java Service Wrapper, we can easily sol
constructor child . prototype . eat = function () { //do something }
This inheritance is a rude way of using the parent super constructor to copy the instance properties of the parent class into the subclass in such a way that the object is impersonating. Inherits the properties and methods of the parent prototype in a way that inherits from the stereotype.
This way of inheriting, you will find that the properties of the i
For the practical use of machine learning. It is not enough to know the level of light, and we need to dig deeper into the problems encountered in the practical. I'm going to make a tidy up of some trivial knowledge points.1 Data imbalance issuesThis problem is often encountered.Take a supervised study of the two classification problem. We need the annotations of both positive and negative examples. Assuming we get the training data are very few negative examples very many, then directly to do c
As a science man, programming language design is not very strange. Before the reason of contact with C, the self-sense of learning python to get started is very fast. Python gives me the feeling that it's really a lot easier than C. A lot of C need to write a long code in the array to solve the problem, with Python a few lines of code can be solved, experience the tedious C, Python's simple and rude to give me the feeling is not generally cool.In fact
or references to achieve polymorphism;Hiding appears simple and rude, in the inheriting class as long as the parent class is the same name (only requires the same function name/variable name, other return value, virtual non-virtual) functions, when the object called with the same name function, the base class corresponding function, variable hiding, If a member with the same name to access its parent class should explicitly use the base class name::
by regular expression. How do you write this regular expression? Here's a simple and rude way to do this:Reptiles often use. *? to do non-greedy matching (professional noun please Baidu), you can simply think of this (. *?) On behalf of what you want to crawl out of things, such things in each Web source is sandwiched between and ">ftp . Some people may ask, that this match out is not the URL ah, for example, out of is ://d:[email protected]:12311/[
For the hibernate framework, here is my own opinion, everyone's understanding is different, I hope that readers according to their own needs to inquire about what they want. Let me share with you some of the theories and practices that I have learned about hibernate:
First, let's look at the overview of hibernate: What is a framework, what is hibernate, what is an ORM
Next, get started with hibernate: building the development environment and implementing some simple features
The
know when the lock will be released, and if it is simply rude to suspend the current thread directly, it may outweigh the costs and increase the resource consumption. At this time the virtual opportunity assumes that in the near future we can get locks. The system causes the current thread to make several empty loops, and after several loops, if the lock is acquired, it enters the critical section or hangs the thread.4 lock removal. When a virtual ma
by jquery, which is the master of most resources compared to traversal. If the access element in the traversal is 10ms, it is rude to say that executing a addclass is at least 100ms-level consumption.Therefore, in order to further optimize the efficiency, we have to reduce the operation of elements to start. Re-examine the code carefully and find that the function has a lot of modifications to the style, including at least:
Add class to all
request is being requested. The code is as follows: /// ///whether the Layim interface request/// /// /// /// Public Static BOOLIslayimrequest ( ThisHttpContext context, layimoptions options) { returnIsconfigpath (context. Request.Path.Value) | |context. Request.Path.Value.StartsWith (options. Apiprefix, stringcomparison.currentcultureignorecase); }Yes, it was so simple and rude, it use
forms
How do you validate the generated elements if you have a part of the form whose contents are dynamically generated, and the number and name are uncertain? In fact, maintaining a dynamic form is inherently a problem. But in angular, just remember one point: Get your data ready and the rest to angular. As in the following example, you only need to maintain an array, and then use Ng-repeat to quickly render to the page.
In fact, the dynamic form and the general form validation are cons
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