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Grep characters before and after match?
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3 characters before and 4 characters after
$> echo "some123_string_and_another" | grep -o -P '.{0,3}string.{0,4}'
23_string_and
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Cookie overflow in rails application?
...ore.rb from
(App)::Application.config.session_store :cookie_store, :key => 'xxx'
to
(App)::Application.config.session_store :active_record_store
Once you’ve done the three steps, restart your application. Rails will now use the sessions table to store session data,
and you won’t have ...
iOS 7 status bar back to iOS 6 default style in iPhone app?
...cation:didFinishLaunchingWithOptions, call
if (NSFoundationVersionNumber > NSFoundationVersionNumber_iOS_6_1) {
[application setStatusBarStyle:UIStatusBarStyleLightContent];
self.window.clipsToBounds =YES;
self.window.frame = CGRectMake(0,20,self.window.frame.size.width,self.window....
URL encoding the space character: + or %20?
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>> you should have %20 before the ? and + after Sorry for the silly question. I know a bit somehow that hashtag parameter is used after "?" question mark parameter. Though it is somehow different because using "#" does...
Java SecurityException: signer information does not match
... jar files which can be done from (Eclipse). Right click on your package -> Build Path -> Configure build path -> References and Libraries -> Order and Export. Try changing the order of jars which contain signature files.
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How to find issues that at some point has been assigned to you?
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Does the was keyword also return a result if the user is the current assignee/reporter? (and say the issue didn't previously have an assignee, or they were the first assigned ever to that issue)
– nmz787
Sep 10 '15 at 0:24
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How to get IntPtr from byte[] in C#
....Length);
// Call unmanaged code
Marshal.FreeHGlobal(unmanagedPointer);
Alternatively you could declare a struct with one property and then use Marshal.PtrToStructure, but that would still require allocating unmanaged memory.
Edit: Also, as Tyalis pointed out, you can also use fixed if unsafe cod...
Checking whether something is iterable
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Why so verbose?
const isIterable = object =>
object != null && typeof object[Symbol.iterator] === 'function'
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vagrant up failed, /dev/vboxnetctl: no such file or directory
...s worked for me:
Grant permission to VirtualBox under System Preferences > Security & Privacy > General (this request is new to macOS High Sierra)
Open Terminal and run: sudo "/Library/Application Support/VirtualBox/LaunchDaemons/VirtualBoxStartup.sh" restart
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JavaScript: Class.method vs. Class.prototype.method
... "called from func def.");}
ExampleClass.method(); // >> output: `called from func def.`
var someInstance = new ExampleClass();
someInstance.method('Called from instance');
// >> error! `someInstance.method is not a function`
With same code, if .prototype...