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How do I wait for an asynchronously dispatched block to finish?
I am testing some code that does asynchronous processing using Grand Central Dispatch. The testing code looks like this:
13...
How to check if anonymous object has a method?
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Doesn't handle the case where the property is defined, but is not a function.
– matt2000
Aug 29 '18 at 23:42
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What is a predicate in c#? [duplicate]
I am very new to using predicates and just learned how to write:
4 Answers
4
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Add EBS to Ubuntu EC2 Instance
... to format the EBS volume (block device) with a file system between step 1 and step 2. So the entire process with your sample mount point is:
Create EBS volume.
Attach EBS volume to /dev/sdf (EC2's external name for this particular device number).
Format file system /dev/xvdf (Ubuntu's internal na...
Is there a way to follow redirects with command line cURL?
...f the commenters.
For me, the obstacle was that the page required a login and then gave me a new URL through javascript. Here is what I had to do:
curl -c cookiejar -g -O -J -L -F "j_username=yourusename" -F "j_password=yourpassword" <URL>
Note that j_username and j_password is the name of...
How to add a TextView to LinearLayout in Android
...xml:-
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:id="@+id/info"
android:layout_height="wrap_content"
android:orientation="vertical">
</LinearLayout>
this is Stackove...
Relative imports in Python 2.7
... is that there is a big difference between directly running a Python file, and importing that file from somewhere else. Just knowing what directory a file is in does not determine what package Python thinks it is in. That depends, additionally, on how you load the file into Python (by running or b...
PHP calculate age
...s well
$birthDate = "12/17/1983";
//explode the date to get month, day and year
$birthDate = explode("/", $birthDate);
//get age from date or birthdate
$age = (date("md", date("U", mktime(0, 0, 0, $birthDate[0], $birthDate[1], $birthDate[2]))) > date("md")
? ((date("Y") - $birthDate...
How to remove the hash from window.location (URL) with JavaScript without page refresh?
... This is just plain wrong, you can change window.location.hash and it will not trigger a refresh.
– Evgeny
Oct 31 '10 at 20:21
61
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CORS: Cannot use wildcard in Access-Control-Allow-Origin when credentials flag is true
...these questions :
Access-Control-Allow-Origin wildcard subdomains, ports and protocols
Cross Origin Resource Sharing with Credentials
Besides * is too permissive and would defeat use of credentials. So set http://localhost:3000 or http://localhost:8000 as the allow origin header.
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