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签名错误

This shows error "The request signature we calculated does not match the signature you provided. Check your AWS. string url; integer statuscode; String date1=json.serialize(Datetime.now()); if(date1.contains('"')){ date1=date1.replace('"','');} String algorithm . . .阅读更多

Javascript "onClick" event doesn't work

I have this line in my php file: echo "<input type='button' id='showButton' value='show' onclick='showOld()'>"; The button is displayed but when it is clicked, nothing happens. The function is located in an external JS file. this is function declaration: Other "onclick" events and JS . . .阅读更多

gtk_action_group_new() and GtkStock - What to use instead?

The following code is from listing 9-11 of Foundations of GTK+ Development. Through this book, I've been attempting to migrate any GTK2 specific stuff (or any depreciated code for that matter) to learn what's relevant at the present moment. That said, this generated a lot of warnings o . . .阅读更多

Avoiding "ISO C99 requires rest arguments to be used"

With gcc 4.6.3 (with -ansi -pedantic), I've got the following code: // Argument counting macro #define NARGS(...) NARGS_(__VA_ARGS__, 5, 4, 3, 2, 1) #define NARGS_(_1, _2, _3, _4, _5, _, ...) _ static inline void fi_init_(size_t nargs, fileinfo_t *finfo, ...) { // Default fmt/type . . .阅读更多

Jinja2: TemplateSyntaxError: Encountered unknown tag

"I am using Flask,Jinja2,higHighcharts" Example (Python/Flask): @app.route("/column/") def column(): data=[{"data": [49.9, 54.4], "name": "Tokyo"}, {"data": [42, 30.4], "name": "AC"}] return render_template('column.html', data=data) Example(html,Jinja2,highcharts),my code is Wr . . .阅读更多

Spring Boot "No message available" error(status = 404),

I'm using Spring Boot with embeded Tomcat. When it starts it logs into console: s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/home]}" onto public java.lang.String com.vlad.pet.contactlist.webapp.controller.SampleController.helloWorld(org.springframework.ui.Model) So I guess the . . .阅读更多

警告:" 无" 日志驱动程序没有可用的日志

I am following below url for logging driver https://docs.docker.com/engine/admin/logging/overview/#configure-the-default-logging-driver now, I want to remove this logging driver I have remove file(daemon.json) from /etc/docker folder too. But when I build container, system should alway . . .阅读更多

C ++返回值类型与函数类型不匹配

I'm trying to return a matrix and in the method it's giving me the error: Return value type does not match the function type. Here is the matrix: float obstaculos[20][4]; Here is the method: float** getObstaculos() { return obstaculos; } Do you know what the problem may be? . . .阅读更多

error: arma::memory::acquire(): out of memory for Armadillo

I encounter the error described in the title when I try to multiply a 10516x66 matrix by a 66x10516 (a matrix by its transposed). The result should be a 10516x10516 matrix which of course I never achieve. Maybe my reasoning is flawed but since my matrix is is a Mat<double> and each dou . . .阅读更多