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问题 I need to open the default text editor in Linux without having a file. I know that I could use the comand xdg-open to open a file in the default editor but I need to open the editor without having a file and let the user create the file. Edit: I solve with this script: #!/bin/sh cd /usr/share/applications/ atalho=`grep $1 defaults.list | tail -1 | sed "s:^$1=::" ` `grep '^Exec' $atalho | tail -1 | sed 's/^Exec=//' | sed 's/%.//'` & Works fine on Ubuntu but I'm worried if this script will work

问题 I want to find out the default network in use. My current method was to find all IP addresses and compare it to the default gateway IP address, but that sounds silly. What is the correct way of doing it ? UPDATE I want to use a C program, not by commands ... 回答1: You can try a slightly dirtier but infinitely easier approach: cnicutar@lemon:~$ ip route show to 0.0.0.0/0 default via X.Y.Z.T dev eth0 proto static ^^^^ So you can try: FILE *cmd = popen("ip route show", "r"); fgets(str, LEN, cmd);

问题 I want to find out the default network in use. My current method was to find all IP addresses and compare it to the default gateway IP address, but that sounds silly. What is the correct way of doing it ? UPDATE I want to use a C program, not by commands ... 回答1: You can try a slightly dirtier but infinitely easier approach: cnicutar@lemon:~$ ip route show to 0.0.0.0/0 default via X.Y.Z.T dev eth0 proto static ^^^^ So you can try: FILE *cmd = popen("ip route show", "r"); fgets(str, LEN, cmd);

问题 I want to change Android default dialer and want to make my own customized dialer. For this purpose I have choose this GIthub repo as start up project. This works well on all other phone and stops working on huawei p8 lite. The default pop up message does not shows up for setting the app as default. Here is code block private fun checkDefaultDialer() { if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) return val telecomManager = getSystemService(TELECOM_SERVICE) as TelecomManager val

问题 I have seen "divergent" definitions of the terms abstract method , concrete method and default method in some StackOverflow answers. What are the real definitions, as given by the Java Language Specification? Please include the relevant supporting JLS references in your answer. 回答1: According to the JLS 8.4.3.1: "An abstract method declaration introduces the method as a member, providing its signature (§8.4.2), result (§8.4.5), and throws clause if any (§8.4.6), but does not provide an

问题 I am trying to start CakePHP. I made bookmarker and tested by command bin\cake server . It showed one error as connection to database could not be established: SQLSTATE[HY000] [1045] Access denied for user 'my_app'@'localhost' (using password: YES). I read the config/app.default.php file. It says there is a database my_app and another database test_myapp with some users. I can not find these databases in phymyadmin in xampp. Am I supposed to create the named databases and users manually? I

问题 In my android application, I use a listview and some linear layout on wich the user can click. Of course, I had to set the background of my LinearLayout to a xml file where the stated pressed, selected are defined: myView.setBackgroundDrawable( getDrawable(android.R.drawable.list_selector_background)); So no problem I set the drawable to transparent when normal use and orange when clicked. My only problem is that on the galaxy S and some other customized phone (Sense UI) the color of the

问题 In my android application, I use a listview and some linear layout on wich the user can click. Of course, I had to set the background of my LinearLayout to a xml file where the stated pressed, selected are defined: myView.setBackgroundDrawable( getDrawable(android.R.drawable.list_selector_background)); So no problem I set the drawable to transparent when normal use and orange when clicked. My only problem is that on the galaxy S and some other customized phone (Sense UI) the color of the

问题 I have here a WCF Duplex Service, the requierement is that the Callback to the client should have a timeout of 10 seconds, therefor my web.config file of the Service looks like this: <bindings> <basicHttpBinding> <binding name="simulatorEndpoint" closeTimeout="00:00:10" openTimeout="00:00:10" receiveTimeout="00:00:10" sendTimeout="00:00:10" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferSize="65536" maxBufferPoolSize="524288"

问题 I have an oracle table like this: create table tms_transaction_tbl ( trans_id number primary key, location_id number, trans_date date, resource_id number, ts_id number, max_value number, booked_units number default 0, remaining number default (select max_value-booked_units), booked number not null , user_id number, trans_time timestamp ); as you can see I tried to set default value of remaining to (max_value-booked_units) remainging number default (select max_value-booked_units), but it gives