environment

问题 In my local/development environment, the MySQLi query is performing OK. However, when I upload it on my web host environment, I get this error: Fatal error: Call to a member function bind_param() on a non-object in... Here is the code: global $mysqli; $stmt = $mysqli->prepare("SELECT id, description FROM tbl_page_answer_category WHERE cur_own_id = ?"); $stmt->bind_param('i', $cur_id); $stmt->execute(); $stmt->bind_result($uid, $desc); To check my query, I tried to execute the query via

问题 I am currently on Windows and the Venv is not getting activatedUnactivated ENV, Is there any way to fix this. Thanking you guys in advance! Help out a newbie! 回答1: In windows: Press Windows (or Windows+R) and then type “cmd”: Run the Command Prompt in normal mode. cd C:\Users\user\Desktop\UserDjangoProject> pip install virtualenv For Create a venv run this virtualenv -p python3 venv Activate virtualenv venv\Scripts\activate It will look like this (venv) C:\Users\user\Desktop\UserDjangoProject

问题 In my springboot project, there are three configuration files application.yml --> used in local development application-test.yml --> running in a test environment application-prod.yml --> running in a production environment pom.xml ... <properties> <docker-repository>self-ip:port</docker-repository> </properties> ... <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> <plugin> <groupId>com.google.cloud.tools<

问题 Sorry if the question is worded wrong - I don't know the right word for what I'm asking for! :) Say, you have some simple C program like: #include <stdio.h> int main() { int a=2; printf("Hello World %d\n", a); return 0; } Typically, this would have to be saved in a file (say, hello.c ); then we run gcc on the source file and obtain executable file - and if we compiled in debug information, then we can use gdb on the executable, to step through lines of code, and inspect variables. What I

问题 Let's say you have 2 conda environments: py3_env and py3_clone_env If you have a script.py with the following structure: #![shebang] import sys def main(): print("hello world", file=sys.stdout) if __name__ == "__main__": main() Is it possible to have the shebang be a variable that is determined from the current conda environment? For example: From py3_env environment: #!~/anaconda/envs/py3_env/bin/python and from py3_clone_env environment: #!~/anaconda/envs/py3_clone_env/bin/python 回答1: I

问题 I want to define my own distribution functions to be used with fitdist or fitdistr function in R. Using fitdist in the fitdistrplus package as an example. I define a customized distribution called sgamma as follows: dsgamma<-function(x,shape){return(dgamma(x,shape,scale=1));} qsgamma<-function(p,shape){return(qgamma(p,shape,scale=1));} psgamma<-function(q,shape){return(pgamma(q,shape,scale=1));} rsgamma<-function(n,shape){return(rgamma(n,shape,scale=1));} My question is where I should define

问题 I want to define my own distribution functions to be used with fitdist or fitdistr function in R. Using fitdist in the fitdistrplus package as an example. I define a customized distribution called sgamma as follows: dsgamma<-function(x,shape){return(dgamma(x,shape,scale=1));} qsgamma<-function(p,shape){return(qgamma(p,shape,scale=1));} psgamma<-function(q,shape){return(pgamma(q,shape,scale=1));} rsgamma<-function(n,shape){return(rgamma(n,shape,scale=1));} My question is where I should define

问题 I need help drawing the relevant portions of the environment model diagram when evaluating this code: Scheme>(define x 10) Scheme> ((lambda (x y) (+ (y 3) x)) 6 (lambda (w) (* x 9))) I need to make sure and write each lambda body next to the environment in which it is being evaluated. Okay I know that there is only one define so most of the work will be done by “anonymous” or “nameless” functions and these will still show up in various ways in the environment model diagram 回答1: In addition to

问题 I need help drawing the relevant portions of the environment model diagram when evaluating this code: Scheme>(define x 10) Scheme> ((lambda (x y) (+ (y 3) x)) 6 (lambda (w) (* x 9))) I need to make sure and write each lambda body next to the environment in which it is being evaluated. Okay I know that there is only one define so most of the work will be done by “anonymous” or “nameless” functions and these will still show up in various ways in the environment model diagram 回答1: In addition to

问题 I'm working on a vagrant machine (Homestead). In my Homestead.yml I have: sites: - map: myproject.local to: /home/vagrant/projects/myproject/web type: symfony I'm working with Symfony version 3.3 on PHP 7.1.2. The problem is when I try to execute the command php bin/console cache:clear I'm getting the following error: [Symfony\Component\Filesystem\Exception\IOException] Failed to remove directory "/home/vagrant/projects/vkfilestore-code/var/cache/de~/pools": . In my AppKernel.php I have: