在我在unix中的bash脚本中,我添加
set -x
了能够和调试输出.例如,我可以看到:
+qualityPostActionPDT.sh:23> echo -e Our current directory is /Projects/QualityTest
Our current directory is /Projects/QualityTest
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现在我要禁用它.我怎么能这样做,我不再需要详细了..
我正面临转换问题,我希望得到您的帮助.我正在使用gcc4编译器,我很受限制地使用gcc4.
我想将std :: string转换为double.
std::string aQuantity = aRate.getQuantity();
std::string aAmount = aRate.getAmount();
// aAmount = "22.05"
double dQuantity = boost::lexical_cast<double>(aQuantity);
double dAmount = boost::lexical_cast<double> (aAmount);
// dAmount = 22.050000000000001
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顺便说一句,我也试过atof,我仍然有同样的问题.有没有办法使用istringstream与setprecission(2)由得到显示正确的值aAmount?
Python版本:2.6.7 我在for循环中有以下subprocess.call,该循环被执行18次,但是,该过程始终挂在第19个循环上:
if config.get_bool_option(NAME, 'exclude_generated_code', True):
for conf in desc.iter_configs():
for gen in desc.iter_generators(conf):
generator.initialize_generated_path(gen, desc)
for genpath in gen.generated_path:
os.rename(cov_file, cov_file+'.temp')
exclude = ['lcov']
exclude += ['-r', cov_file+'.temp', '"'+genpath+'/*"']
exclude += ['-o', cov_file]
if verbose: Tracer.log.info("Running "+ ' '.join(exclude))
try:
subprocess.call(' '.join(exclude), stdout=out, stderr=out, shell=True)
except subprocess.CalledProcessError, e:
if verbose: Tracer.log.info("TESTING: Got Exception \n")
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控制台输出如下所示:
Running lcov -r /remote/XXXXXX/coverage.19.temp "/remote/XXXXXX/xml/2009a/generated/*" -o /remote/XXXXX/gcov/coverage.19
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由于我对python脚本不是很熟悉,所以我只是在徘徊我是否在做错什么...我怀疑某个地方出现了死锁。
会stdout, stderr = process.communicate()处理这些问题吗?
在什么情况下subprocess.call会挂起任何专家答案?非常感谢
我正在与emguCV一起寻找轮廓的基本点,然后将此点保存在文件中,并在将来用户重绘此形状。因此,我的目标是该图像:
我的解决方案是:1.将图像导入图片框2.使用canny算法进行边缘检测3.查找轮廓并保存点
我发现下面的代码很多点,但我不能用此点绘制第一个形状!
using Emgu.CV;
using Emgu.Util;
private void button1_Click(object sender, EventArgs e)
{
Bitmap bmp = new Bitmap(pictureBox1.Image);
Image<Bgr, Byte> img = new Image<Bgr, byte>(bmp);
Image<Gray, Byte> gray = img.Convert<Gray, Byte>().PyrDown().PyrUp();
Gray cannyThreshold = new Gray(80);
Gray cannyThresholdLinking = new Gray(120);
Gray circleAccumulatorThreshold = new Gray(120);
Image<Gray, Byte> cannyEdges = gray.Canny(cannyThreshold, cannyThresholdLinking).Not();
Bitmap color;
Bitmap bgray;
IdentifyContours(cannyEdges.Bitmap, 50, true, out bgray, out color);
pictureBox1.Image = color;
}
public void IdentifyContours(Bitmap colorImage, int thresholdValue, bool invert, out Bitmap processedGray, …Run Code Online (Sandbox Code Playgroud) 在Visual Studio 2013中,当我转到Tools-> Android-> Android SDK Manager时,对话框没有显示出来.在Xamarin Diagnostics中,我得到以下信息:
[I:]: Tracking android devices started
[D:]: Tracking avd started
[D:]: avd watcher *.ini path: 'C:\Users\Jimmy\.android\avd'
[D:]: avd watcher android path: 'C:\Android\sdk\tools\android.bat'
[W:]: Adb connection refused
[I:]: Starting Adb server (adb start-server)
[I:]: Adb start-server operation completed
[D:]: TrackDeviceTask got:
[I:]: Got new device list from adb with 0 devices
[D:]: avd watcher error: load process of avd devices failed, please check the following error: The system cannot find the path specified.
The …Run Code Online (Sandbox Code Playgroud) 它应该很简单,但看不到它......我有以下内容:
@Html.EditorFor(model => model.FullName, new
{
htmlAttributes = new
{
@class = "form-control",
placeholder = "Please type your " + Html.DisplayNameFor( model => model.FullName),
data_bind = "value: product.fullname"
}
})
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当我输入时,Html.DisplayNameFor( model => model.FullName.ToLower())我得到一个例外
System.Web.Mvc.dll中出现"System.InvalidOperationException"类型的异常,但未在用户代码中处理
附加信息:模板只能用于字段访问,属性访问,单维数组索引或单参数自定义索引器表达式.
我怎么能在里面操纵我的字符串Html.DisplayNameFor?
这不起作用
public class Foo {
private int X { get; }
public Foo(string s) {
int.TryParse(s, out X);
}
}
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但这有效:
public class Foo {
private int X { get; }
public Foo(string s) {
int x;
int.TryParse(s, out x);
X = x;
}
}
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两者之间有什么区别,因为out参数不需要初始化.为什么属性不能作为out参数传递?
我正在尝试做一些简单的事情:用泛型创建一个实例.我收到一个错误,说我无法创建实例,因为我没有new约束.但是,我在退货声明中确实有这个!有什么想法吗?
public IAction CreateAction<TA, TP>(ActionParamBase param)
where TA : IAction
where TP : ActionParamBase
{
Ensure.That(param).Is<TP>();
return new TA { Param = param as TP };
}
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android ×1
atof ×1
c#-6.0 ×1
c++ ×1
debugging ×1
emgucv ×1
generics ×1
lexical-cast ×1
python ×1
python-2.7 ×1
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