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JavaScript, elegant way to check nested object properties for null/undefined [duplicate]
... be what you want.
example:
try {
user.loc.lat.doSomething();
} catch(error) {
//report
}
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What's a reliable way to make an iOS app crash?
...or exactly this purpose, so it shouldn't generate any compiler warnings or errors.
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Reload Flask app when template file changes
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If anyone encounters an error that says No such file or directory, try using the relative path as in : extra_dirs = ['./directory/to/watch',]
– Kevin
Jul 15 '15 at 5:44
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Artificially create a connection timeout error
...bug in our software that occurs when I receive a connection timeout. These errors are very rare (usually when my connection gets dropped by our internal network). How can I generate this kind of effect artificially so I can test our software?
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java.lang.UnsupportedClassVersionError: Bad version number in .class file?
I am getting this error when I include an opensource library that I had to compile from source. Now, all the suggestions on the web indicate that the code was compiled in one version and executed in another version (new on old). However, I only have one version of JRE on my system. If I run the c...
Mongoose (mongodb) batch insert?
...ocs
callback(err, docs) will be called after all documents get saved or an error occurs. On success, docs is the array of persisted documents.
As Mongoose's author points out here, this method will bypass any validation procedures and access the Mongo driver directly. It's a trade-off you have to ...
Navigation bar appear over the views with new iOS7 SDK
...rew's answer is correct, but:
I would recommend to use this code to avoid errors when running the app on older versions :
#if __IPHONE_OS_VERSION_MAX_ALLOWED > __IPHONE_6_1
if ([self respondsToSelector:@selector(edgesForExtendedLayout)])
self.edgesForExtendedLayout = UIRectEdgeNon...
How to find if a native DLL file is compiled as x64 or x86?
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The Magic field of the IMAGE_OPTIONAL_HEADER (though there is nothing optional about the header in Windows executable images (DLL/EXE files)) will tell you the architecture of the PE.
Here's an example of grabbing the architecture from a file.
public ...
Is there a minlength validation attribute in HTML5?
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@ChaZ @Basj You can add a custom error message by adding the following attribute: oninvalid="this.setCustomValidity('Your message')"
– bigtex777
Nov 26 '14 at 20:31
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How to check if a process id (PID) exists
...aptop:
[root@pinky:~]# ps fax | grep mozilla
3358 ? S 0:00 \_ /bin/sh /usr/lib/firefox-3.5/run-mozilla.sh /usr/lib/firefox-3.5/firefox
16198 pts/2 S+ 0:00 \_ grep mozilla
All examples now will look for PID 3358.
First way: Run "ps aux" and grep for the PID in th...