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How to 'insert if not exists' in MySQL?
I started by googling, and found this article which talks about mutex tables.
10 Answers
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How to delete a record in Django models?
...directly:
SomeModel.objects.filter(id=id).delete()
To delete it from an instance:
instance = SomeModel.objects.get(id=id)
instance.delete()
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How to set the text color of TextView in code?
In XML, we can set a text color by the textColor attribute, like android:textColor="#FF0000" . But how do I change it by coding?
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Add property to anonymous type after creation
...lper methods.
If the consumer didn't add an ID attribute, I want to add it in my helper method.
4 Answers
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Using CSS to affect div style inside iframe
Is it possible to change styles of a div that resides inside an iframe on the page using CSS only?
13 Answers
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How set background drawable programmatically in Android
...drawable.ready); is correct.
Another way to achieve it is to use the following:
final int sdk = android.os.Build.VERSION.SDK_INT;
if(sdk < android.os.Build.VERSION_CODES.JELLY_BEAN) {
layout.setBackgroundDrawable(ContextCompat.getDrawable(context, R.drawable.ready) );
} else {
layout.set...
How to pause a YouTube player when hiding the iframe?
I have a hidden div containing a YouTube video in an <iframe> . When the user clicks on a link, this div becomes visible, the user should then be able to play the video.
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How do I avoid capturing self in blocks when implementing an API?
I have a working app and I'm working on converting it to ARC in Xcode 4.2. One of the pre-check warnings involves capturing self strongly in a block leading to a retain cycle. I've made a simple code sample to illustrate the issue. I believe I understand what this means but I'm not sure the "corre...
How to exclude property from Json Serialization
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If you are using System.Web.Script.Serialization in the .NET framework you can put a ScriptIgnore attribute on the members that shouldn't be serialized. See the example taken from here:
Consider the following (simplified) case:
public cl...
How to upload a file to directory in S3 bucket using boto
I want to copy a file in s3 bucket using python.
13 Answers
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