keys

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am trying to use selenium's send_keys to send emoji characters to a text box with the following python code. browser = webdriver.Chrome(chrome_options=options) browser.get("https://www.google.co.in") time.sleep(5) working = browser.find_element_by_id('lst-ib') text = u'Python is ?' working.send_keys(text) I am getting the following error. Traceback (most recent call last): File "smiley.py", line 30, in <module> working.send_keys(text) File "C:\Python27\lib\site-packages\selenium\webdriver\remote\webelement.py", line 347, in send_keys self.

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: So, I have a host, call it rob . I used ssh-keygen on rob to get a public key, which I gave to github in the add a new deploy key screen for repository cheech . Now I want to deploy chong on rob as well. But if I go to the add new deploy key screen for repository chong on github, and paste in the public key I generated on rob it says key already in use . I thought, if they key was in use, I could clone chong on rob but that says permission denied. So clearly this is more complicated than I thought and it involves having multiple keys or

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a HashMap with millions of entries. Need to retrieve all entries whose keys match a specific set of criteria (in this case, each key is an object with two integer properties; I need to retrieve all keys where each of these integers fall within a specified range). What is the fastest, most efficient way to iterate through all such keys? UPDATE: In this particular case, though I didn't specify it up front, the first integer in the key has a natural precedence over the second integer. 回答1: Here's a solution using TreeMap : public static

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: We currently have a Jenkins master on Windows, an ubuntu slave, and a Windows slave. I'm trying to set up git on the Windows slave. msysgit is installed, and I included the directory in the system path variable so that I can call "git.exe" or "git.cmd" anywhere. In my Jenkins configuration, I have a credential with a private SSH key. This credential is for Jenkins to use with Git. This works on the master node and the linux slave. I did not put the private ssh key on either of those two servers, Jenkins handled it for me. But the Windows

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a a map that looks like this: public class VerbResult { @JsonProperty("similarVerbs") private Map > similarVerbs; } My verb class looks like this: public class Verb extends Word { @JsonCreator public Verb(@JsonProperty("start") int start, @JsonProperty("length") int length, @JsonProperty("type") String type, @JsonProperty("value") VerbInfo value) { super(length, length, type, value); } //... } I want to serialize and deserialize instances of my VerbResult class, but when I do I get this error: Can not find a (Map) Key deserializer for

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: This question already has an answer here: Thrust inside user written kernels 4 answers The Thrust library can be used to sort data. The call might look like this (with a keys and a values vector): thrust::sort_by_key(d_keys.begin(), d_keys.end(), d_values.begin()); called on the CPU, with d_keys and d_values being in the CPU memory; and the bulk of the execution happens on the GPU. However, my data is already on the GPU? How can I use the Thrust library to perform efficient sorting directly on the GPU, i.e., to call the sort_by_key function

项目需要，要配置一个Redis 集群， 因此决定用docker 来做。 具体步骤如下 首先需要安装docker 和docker-compose 安装方法自行百度。 FROM ubuntu RUN apt-get update && apt-get install -y redis-server RUN mkdir /root/redis COPY redis.conf /etc/redis/redis.conf RUN chmod 777 -R /root/redis EXPOSE 6379 mkdir redis1 redis2 redis3 redis4 redis5 redis6 创建 redis.conf 文件 bind 0.0.0.0 port 6379 tcp-backlog 511 timeout 70 tcp-keepalive 300 daemonize no pidfile /root/redis/redis.pid loglevel notice logfile "/root/redis/redis.log" databases 16 save 900 1 save 300 10 save 60 10000 stop-writes-on-bgsave-error yes rdbcompression yes rdbchecksum yes dbfilename

可以使用KEYS 命令 KEYS pattern 例如， 列出所有的key redis > keys * 列出匹配的key redis > keys apple * 1 ) apple1 2 ) apple2 http://redisdoc.com/key/keys.html 转载请标明出处: redis 如何查看所有的key 文章来源: redis 如何查看所有的key

Redis的数据回写机制 Redis的数据回写机制分同步和异步两种， 同步回写即SAVE命令，主进程直接向磁盘回写数据。在数据大的情况下会导致系统假死很长时间，所以一般不是推荐的。 异步回写即BGSAVE命令，主进程fork后，复制自身并通过这个新的进程回写磁盘，回写结束后新进程自行关闭。由于这样做不需要主进程阻塞，系统不会假死，一般默认会采用这个方法。 个人感觉方法２采用fork主进程的方式很拙劣，但似乎是唯一的方法。内存中的热数据随时可能修改，要在磁盘上保存某个时间的内存镜像必须要冻结。冻结就会导致假死。fork一个新的进程之后等于复制了当时的一个内存镜像，这样主进程上就不需要冻结，只要子进程上操作就可以了。 在小内存的进程上做一个fork,不需要太多资源，但当这个进程的内存空间以Ｇ为单位时，fork就成为一件很恐怖的操作。何况在16G内存的主机上fork 14G内存的进程呢？肯定会报内存无法分配的。更可气的是，越是改动频繁的主机上fork也越频繁，fork操作本身的代价恐怕也不会比假死好多少。 找到原因之后，直接修改/etc/sysctl.conf内核参数vm.overcommit_memory= 1 sysctl -p Linux内核会根据参数vm.overcommit_memory参数的设置决定是否放行。 vm.overcommit_memory = 0：则比较

如何优雅地删除Redis set集合中前缀相同的key？ Redis中有删除单条数据的命令DEL，却没有批量删除特定前缀key的指令，但我们经常遇到需要根据前缀来删除的业务场景，那么究竟该怎么做呢？可能你一通搜索后会得到下边的答案： redis - cli -- raw keys "prefix-*" | xargs redis - cli del 直接在linux下通过redis的keys命令匹配到所有的key，然后调用系统命令xargs来删除，看似十全十美，实则风险巨大。这就是一颗随时爆炸的炸弹！我们都知道Redis是单线程服务模式，使用命令 keys * 查询key的时候会阻塞正常的业务请求，甚至造成redis宕机，所以肯定不行。 因此，我们在生产环境中应当避免使用上边的方法，那使用什么优雅的方法来解决呢？SCAN！ SCAN介绍 Redis从2.8版本开始支持SCAN命令，它是一个基于游标的迭代器，每次被调用之后都会返回一个新的游标，用户在下次迭代时需要使用这个新游标作为SCAN命令的游标参数，以此来延续之前的迭代过程，直到服务器返回值为0的游标时，一次完整的遍历过程就结束了。 SCAN命令的基本语法如下： scan cursor [ MATCH pattern ] [ COUNT count ] MATCH ： 匹配规则，例如遍历以ops-coffee