execution

问题 I am preparing myself for Java certification test and I have found an interesting question related to the execution of Java static blocks. I have spent a lot of time reading about this topic, but I didn't find the answer I was looking for. I know that static blocks are executed when the class is loaded into JVM or when the main method is invoked, but... package oneClassTasks; class Parent { static int age; } class Child extends Parent { static { age = 5; System.out.println("child's static

问题 somebody knows why my rails 3.0.7 cli is so slow? when i run rails s or rails g it takes like 5sec till he actually executes the command... any advice? thanks 回答1: Update: I'm switching my recommendation from rrails to rails-sh as the former supports REPL which is not the use case for rrails.Also patching does seem to add performance when combined with ruby environment variables, now reflected in the answer. One possible reason may be this performance bug in ruby that has it call some code

问题 Say we have a call-back timer function call_time(obj, event). I want to know the elapsed time (delt_time) during the execution of timer function once it is started. Furthermore, I want to use that elapsed time to decide if the function will be continued executing or be terminated (say delt_time > 60s). I want the timer function to determine the running time concurrently. By doing this way, the code knows when to terminate the program once it reaches to the threshold. Actually, I have asked a

问题 Before you flag this as a duplicate, yes there are questions just like this, i've looked at all of them and still couldn't get this working. I'm trying to code in a feature that downloads and runs a .exe file but it doesn't download, run or do anything. I even removed the try catches to find an error or error codes but I have non, so I have no idea where i'm going wrong, here is my code for it public test_Configuration() { InitializeComponent(); } Uri uri = new Uri("http://example.com/files

问题 Say that I have the following code: function testA { setTimeout('testB()', 1000); doLong(); } function testB { doSomething(); } function doLong() { //takes a few seconds to do something } I execute testA() . I have read that Javascript is single-threaded. What happens after 1000 milliseconds, when the timeout for testB() is reached? Some possibilities I can think of: testB() is queued up to execute after doLong() and anything else it called have finished. doLong() is immediately terminated

问题 I am trying to use Hive 1.2.0 over Hadoop 2.6.0. I have created an employee table. However, when I run the following query: hive> load data local inpath '/home/abc/employeedetails' into table employee; I get the following error: Failed with exception Unable to move source file:/home/abc/employeedetails to destination hdfs://localhost:9000/user/hive/warehouse/employee/employeedetails_copy_1 FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.MoveTask What wrong am I

问题 Well basically I may want to execute a script that may take as much as 1 hours as well. What I really want to do is Send SMS to my users using a third party API. So its basically like I supply my script with an array of phone numbers and fire the method to send SMS. However assuming it take 5 seconds to send 1 SMS and I want to send 1000 SMS which is roughly 1 - 2 hours. I can't use set_time_limit() because I am on shared host. One way to do this is store numbers in a session and execute each

问题 My php code is not executed when I access the root directory with http://localhost:8080/sample.html The code I want to run is: <?php phpinfo(); ?> and I tried also the following: Restarted all services several times including putting Wamp Server online Changing the listening port in httpd.conf to 8080 and configuring Skype to accept 80 and 443 ports Could it be that some firefox extensions are blocking php-execution? All I get is the php code exactly like I wrote it. 回答1: You're trying to

问题 I'm writing a service that has to stream output of a executed command both to parent and to log. When there is a long process, the problem is that cmd.StdoutPipe gives me a final (string) result. Is it possible to give partial output of what is going on, like in shell func main() { cmd := exec.Command("sh", "-c", "some long runnig task") stdout, _ := cmd.StdoutPipe() cmd.Start() scanner := bufio.NewScanner(stdout) for scanner.Scan() { m := scanner.Text() fmt.Println(m) log.Printf(m) } cmd

问题 I'm creating a software that would execute custom code line by string SO, is there any method function or whatever you want that can do that : String command="println("the TEST work !!!")"; magicExecMethod(command); *and it print : the TEST work !!! Thancks 回答1: You have several ways to achieve this. You can create java file by printing it line-by-line, then compile it by either invocation of compiler from command line or by calling java.lang.Compiler , then run it. Other way is to run your