小编No_*_*ulz的帖子

我刚刚在Android-studio中导入了我的项目,并尝试在其中创建一个新的Activity.但我不能在android-studio中创建一个Activity.我在这里指的是我看不到Mark Directory As的选项,它在事件日志中显示为UOE

错误消息:UnsupportedOperationException:未实现isDirectory:未实现isDirectory.

更新我的android-studio后,我有这个问题

我有一个输入字符串:

result = '"testing","0.8841","642000.0","80.014521","-60.940653","4522126666","1500854400","","1500842014000","name","80.014521","-60.996532","sampledevice","3","name"'

data = result.split("\n")

i = 0
while i < len(data):
    i = i +1 
    dd = data[i].split(',')
    print dd
    break

并将相应的输出为:

[
  '"testing"',
  '"0.8841"',
  '"642000.0"',
  '"80.014521"',
  '"-60.940653"',
  '"4522126666"',
  '"1500854400"',
  '""',
  '"1500842014000"',
  '"name"',
  '"80.014521"',
  '"-60.996532"',
  '"sampledevice"',
  '"3"',
  '"name"'
]

如何从列表中的每个元素中删除单引号？

我在UBUNTU环境中构建webRTC的步骤.

看看代码:

 gclient config https://webrtc.googlecode.com/svn/trunk
 echo "target_os = ['android', 'unix']" >> .gclient
 gclient sync --nohooks

生成忍者makefile:

cd trunk

 $./build/install-build-deps-android.sh
 $. build/android/envsetup.sh
 Defaulting GYP_GENERATORS to ninja

 $gclient runhooks
 $android_gyp

android_gyp的结果:

GYP_GENERATORS set to 'ninja'
Updating projects from gyp files...
gyp: /home/user/webRTC/trunk/chrome/chrome_resources.gyp not found (cwd: /home/user/webRTC/trunk)
gyp: /home/user/webRTC/trunk/tools/android/findbugs_plugin/findbugs_plugin.gyp not found (cwd: /home/user/webRTC/trunk)
gyp: /home/user/webRTC/trunk/sql/sql.gyp not found (cwd: /home/user/webRTC/trunk)
gyp: /home/user/webRTC/trunk/tools/android/android_tools.gyp not found (cwd: /home/user/webRTC/trunk)
gyp: /home/user/webRTC/trunk/sync/sync.gyp not found (cwd: /home/user/webRTC/trunk)
gyp: /home/user/webRTC/trunk/sandbox/sandbox.gyp not found (cwd: /home/user/webRTC/trunk)
gyp: /home/user/webRTC/trunk/net/net.gyp not found (cwd: /home/user/webRTC/trunk) …

我有一个String,我想把它拆分为","

如果假设我有一个字符串,

 String test = "aa,bb,cc"; 

现在我可以分开了,

String[] spl = test.split(",");

而spl.length是3

如果假设我的字符串是

 String test = ",,,";

这里分割的String 长度为0.但我的预期答案是3.我的测试String是dynamaic值,它可能会有所不同,现在想我有一个类似的字符串

String test = ",aa,dd,,,,,ff,gg"

现在,分裂的数组长度为4.但我预期的答案是9 而我需要通过拆分""和我需要的氨基酸在位置SPL [1]和DD位置SPL [2]和FF位置SPL [7]

有人可以提出解决这个问题的建议吗？

我有一个字典列表,

input = [{"id":2, "color":"green"}, 
         {"id":3, "color":"red"}, 
         {"id":2, "gender":"male"}, 
         {"id":3, "food":"ice_cream"}, 
         {"id":1, "food":"fish"}]

和我的预期输出为

output =[{"id":1, "food":"fish"}, 
         {"id":2, "color":"green", "gender":"male"}, 
         {"id":3, "color":"red", "food":"ice_cream"}]

有没有比几个嵌套for循环更简单的方法？