我已经使用'borb'库安装了pip install borb,在安装之后,我得到了以下消息:
Requirement already satisfied: borb in c:\users\dell\appdata\local\programs\python\python37\lib\site-packages (2.0.25)
WARNING: You are using pip version 22.0.3; however, version 22.0.4 is available.
You should consider upgrading via the 'c
我尝试将eclipse项目导入android studio,得到以下错误:
Error:(1) Attribute "titleTextStyle" has already been defined
Error:(1) Attribute "subtitleTextStyle" has already been defined
Error:(1) Attribute "divider" has already been defined
Error:(1) Attribute "background" has already bee
如果我有一个这样的方法:
public class Main()
{
public void Start()
{
if(//Check if another thread already invoked this method and its in processing//)
DoSomething();
}
void DoSomething()
{
//Some code in here
}
}
如何使用锁来检查线程是否已经在执行DoSomething(),然后跳过它?
我知道lock会让其他调用等待,但我想跳过,而不是等待并执行。
在使用rspec进行测试时,可以检查传递给方法的参数是什么吗?
如果我想测试A类,在A类中我调用B类,B已经被测试过了。我想测试的唯一一件事是B的传入参数。
class A
def method
number = 10
B.calling(number)
end
end
class B
def self.calling(argument)
# This code in this class is already testet
end
end
如何测试B.calling的传入参数?
我有一个包含以下文本的文件。
channel: stable
installed-version: 6.45.6
status: finding out latest version...
channel: stable
installed-version: 6.45.6
latest-version: 6.45.6
status: System is already up to date
在最后一次出现状态后,我试图对文本进行字符串比较:
System is already
我得到的错误如下: Traceback (most recent call last):
File "simple.py", line 6, in <module>
from sweetsourcod.zipper_compress import get_comp_size_bytes
File "/Users/danielribeiro/Python/sweetsourcod-master/sweetsourcod/zipper_compress.py", line 8, in <module>
from ba
我正在编译一个二进制文件,出于各种原因,我想在两个不同的target_link_libraries()命令中添加它的依赖库。
我的命令如下所示:
target_link_libraries(my_prog PRIVATE foo bar)
target_link_libraries(my_prog baz)
然后我得到了错误:
The keyword signature for target_link_libraries has already been used with
the target "my_prog". All uses of target_link_l
我有一个名为Process的记录。
执行以下命令
(ns foo)
(defrecord Process ...)
导致错误Process already refers to: class java.lang.Process in namespace: foo
此外,当我将Process导入到另一个名称空间时,也会遇到同样的错误:
(ns bar
(:import [foo Process]))
下面的片段解决了我的问题,但感觉并不干净。
(ns foo)
(ns-unmap *ns* 'Process)
(defrecord Process ...)
(ns bar
(:i
作为一个汇编初学者,这个错误让我大吃一惊。我正在做一项家庭作业(而不是寻求解决方案),并且我试图将字符串的大小存储在一个变量中。
所以我声明了一个字符串,'message'...
; init message as a string with a line break
message BYTE "You already know what the next", 0dh, 0ah
BYTE "variable will be, don't you?", 0
...and之后,我使用...
len EQU
我正在使用Neo4j,我想知道是否可以创建一个具有唯一字段的lucene索引。(即每个键/值对只能关联一个节点)
例如,我希望实现以下行为:
someIndex.add(node1, "firstName", "Roy");
someIndex.add(node2, "firstName", "John");
// Here I expect to recieve an exception because the key/value pair (firstName, Roy) is already associated with
以下是Mockito文档的主要。但是,Mockito中的示例是无参数方法的存根。,如果方法有参数,如果参数不履行契约,那么该方法会抛出异常怎么办?
所以下一堂课..。
public class UserAccountManager {
/**
* @throws Exception if user with provided username already exists
*/
public void createAccount(User user) throws Exception {
// db access code ...
根据这个答案:,我正在尝试检查目录是否存在。然而,当我运行这段代码时,我得到了line 1: [-d: command not found。我在这里做错了什么?
if [-d "~/.ssl"]; then
echo '~/.ssl directory already exists'
else
sudo mkdir ~/.ssl/
fi
所以,我有这样的短信
String s = "The if-then-else statement provides a secondary path of execution when an "if" clause evaluates to false. You could use an if-then-else statement in the applyBrakes method to take some action if the brakes are applied when the bicycle is not in motion. In this case
class Device
{
public void AssignDevice(string playerName)
{
if (IsAssigned())
{
string message = "This device is already assinged to a player";
MessageBox.Show(message);
}
else
{
我有一个S3Object类型的视频。
我正在尝试使用以下代码将其转换为资源。
Resource resource = new InputStreamResource(video.getObjectContent());
我得到以下错误
"InputStream has already been read - do not use InputStreamResource if a stream needs to be read multiple times"
是否可以将S3Object直接作为资源读取?
我该怎么纠正它呢?
我需要升级到雷鸟78。我目前有68个运行Ubuntu20.04。我试过:
sudo add-apt-repository ppa:ubuntu-mozilla-daily/ppa
然后是update和upgrade,但是Ubuntu一直告诉我:
thunderbird is already the newest version (1:68.10.0+build1-0ubuntu0.20.04.1).
最好的
我使用imagecache_create_path()和getimagesize()来获取由imagecache生成的图像的路径及其尺寸。但是,如果这是我们第一次访问页面,那么该图像还不存在,imagecache_create_path也不会生成它。
代码如下:
// we get the image path from a preset (always return the path even if the file doesn't exist)
$small_image_path = imagecache_create_path('gallery_image_small
在我的java代码中,我正在处理大量的数据。因此,我将代码作为servlet移动到App Engine的Cron Job。有时,它工作得很好。在数据量增加后,cron作业不工作,并显示以下错误消息。
2012-09-26 04:18:40.627
'ServletName' 'MethodName': Inside SQLExceptionjava.sql.SQLRecoverableException:
Connection is already in use.
I 2012-09-26 04:18:40.741
This request caus
我试图与列表中的所有in建立朋友关系,但是我得到了一个错误:
Node already exists with label User and property "id"=[2]
Neo.ClientError.Schema.ConstraintViolation
基本上,这些is已经存在,我只想同时使用-每个is来创建与多个is的朋友关系。我如何做到这一点,或者有没有其他方法来做同样的事情?我真的很感谢你的帮助。
MATCH (u:User {id:"3"})
FOREACH (id in ["2","4","5