debugging

问题 Is there a way to, at runtime, map the value of an enum to the name? (I'm building with GCC.) I know GDB can do it and I'm willing to use something that's unportable and mucks with debug data. Edit: I'm looking for a solution that doesn't require modifying the original enum declaration nor hand copying all the values out in a mapping function. I already know how to do both of those. Effectively; I want a function that does whatever GDB does when it formats runtime enum values. 回答1: If you don

问题 This question already has answers here : Detecting if iOS app is run in debugger (8 answers) Closed 4 years ago . I'm trying to enable/disable parts of my code based on whether or not the code be being run via USB/Xcode (debug), or in production mode downloaded from the app store (release). I'm aware of checking if it is running in DEBUG or RELEASE mode like this: #ifdef DEBUG // Stuff for debug mode #else // Stuff for release mode #endif but the problem is that an obvious loop-hole I see is

问题 What's the difference between binary(10) vs char(10)character set binary ? And varbinary(10) vs varchar(10)character set binary ? Are they synonymous in all MySQL engines? Is there any gotcha to watch out for? 回答1: There isn't a difference. However, there is a caveat if you're storing a string. If you only want to store a byte array or other binary data such as a stream or file then use the binary type as that is what they are meant for. Quote from the MySQL manual: The use of CHARACTER SET

问题 Breakpoints are not being triggered during debugging. I discovered it's because of optimised code. How can you disable optimisation? I've walked through every toolbar and the closest option that I could find is Product => Perform Action => Generate Optimisation Profile . This does not work as I am debugging in the simulator, says Xcode. Is it possible to disable code optimisation in Xcode 6.1 using the simulator and writing in Swift, and if so, how would I go about that? SOLUTION: Click your

问题 I'm trying to debug an iOS app and I'm having problems with lldb in the simulator. Calling class methods doesn't seem to work. Instance methods work fine. (lldb) po Category <no result> (lldb) po [Category class] error: Couldn't prepare the expression for execution in the target (lldb) po self (TagsTableViewController *) $5 = 0x085585a0 <TagsTableViewController: 0x85585a0> I've tried the 4.3 and 5.1 simulators but both exhibit the same issues. Everything works fine when debugging on a device.

问题 I am trying to see the properties of an object with over 300 properties in the Immediate Window of Visual Studio 2005. Only the first 100 items are displayed, followed by this caption: < More... (The first 100 of 306 items were displayed.) > I am trying to see the rest of the items, but can't figure it out. I realize that I could see these in a Watch window, but that's not the same. 回答1: I know this is way late. However, If you add your object to the watch window. Expand the properties, where

问题 I have a windows box and a VM running CentOS. Does anyone happen to know how I can debug a node CLI script (which doesn't open a port) using PHPStorm? The "edit configuration" seems to only support connecting somewhere instead of listening for incoming connections. 回答1: Make sure you have the nodejs plugin installed. If your server has the balancer package available (my EC2 box didn't), you can use this tutorial to forward the port with balancer. yum install balance -yt balance -df 8585 127.0

问题 I have a windows box and a VM running CentOS. Does anyone happen to know how I can debug a node CLI script (which doesn't open a port) using PHPStorm? The "edit configuration" seems to only support connecting somewhere instead of listening for incoming connections. 回答1: Make sure you have the nodejs plugin installed. If your server has the balancer package available (my EC2 box didn't), you can use this tutorial to forward the port with balancer. yum install balance -yt balance -df 8585 127.0

问题 Is there a way to modify JavaScript code while debugging? Visual Studio has "Edit and Continue", and similar hot swapping of code can be done in Java and other languages. Can this be done with JavaScript, and if so, how? 回答1: Chrome, Safari, and some other WebKit-based browsers contain a feature in the Web Inspector known as Live Edit. If you go to the Scripts panel and are stopped on a breakpoint (or maybe even if not stopped on a breakpoint — I'm not sure), you can double click on a line

问题 This question already has answers here : Get a list of all QObjects created in a Application (1 answer) Find item in QApplication by only the objectname (3 answers) Closed last month . I build a GUI with 100+ widgets, layouts, frames, ... Each one of those I set a name manually with .setObjectName to make debugging easier. Instead of "LayoutObject has a problem" I get error messages such as "name_of_LayoutObject has a problem" which is very convenient. However it enlarges my code by ~20% and