大约有 45,000 项符合查询结果（耗时：0.0510秒） [XML]
How to change a nullable column to not nullable in a Rails migration?
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For Rails 4, this appears to be the most accurate and complete answer, including the commented-out default setting.
– Mike Fischer
Aug 23 '15 at 16:31
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Logging uncaught exceptions in Python
... program is going to terminate due to an uncaught exception, which cannot happen more than once.
– Nawaz
Nov 16 '16 at 5:36
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How do I break a string across more than one line of code in JavaScript?
...ed:
alert ( "Please Select file\
to delete");
Note that this backslash approach is not necessarily preferred, and possibly not universally supported (I had trouble finding hard data on this). It is not in the ECMA 5.1 spec.
When working with other code (not in quotes), line breaks are ignored, ...
How do I unlock a SQLite database?
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I caused my sqlite db to become locked by crashing an app during a write. Here is how i fixed it:
echo ".dump" | sqlite old.db | sqlite new.db
Taken from: http://random.kakaopor.hu/how-to-repair-an-sqlite-database
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Add floating point value to android resources/values
...nteger" format="float">0.60</item>
Use from a layout.xml file
app:layout_constraintGuide_percent="@integer/guideline_button_top"
share
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improve this answer
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Creating a favicon [closed]
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Excellent app. This is one of the best favicon generator sites I've seen.
– Chris Livdahl
Jan 15 '14 at 8:03
1
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Android: How to create a Dialog without a title?
...ertDialog.Builder builder;
AlertDialog alertDialog;
Context mContext = getApplicationContext();
LayoutInflater inflater = (LayoutInflater)
mContext.getSystemService(LAYOUT_INFLATER_SERVICE);
View layout = inflater.inflate(R.layout.custom_dialog,
(ViewGroup) findViewById(R.id.layout_...
Using Java 8 to convert a list of objects into a string obtained from the toString() method
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One simple way is to append your list items in a StringBuilder
List<Integer> list = new ArrayList<>();
list.add(1);
list.add(2);
list.add(3);
StringBuilder b = new StringBuilder();
list.forEach(b::append);
Sys...
ADB No Devices Found
I am attempting to install an Android app on my brand new Nexus 10 . I have a .apk file. I have downloaded the Android SDK, installed "Android SDK Tools", "Android SDK Platform-tools", and Google USB Driver. I have checked the setting on my Nexus 10 for "Unknown Sources".
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filters on ng-model in an input
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@Valentyn, your solution applied to SO question I referenced in the comment above. Thanks. stackoverflow.com/questions/12176925/…
– Mark Rajcok
Jan 20 '13 at 0:54
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