大约有 46,000 项符合查询结果（耗时：0.0591秒） [XML]
“ArrayAdapter requires the resource ID to be a TextView” xml problems
...ike this:
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
// other attributes of the TextView
/>
If you want your list row layout to be some...
Strange function in ActivityManager: isUserAMonkey. What does this mean, what is its use?
I found the following function in package android.app.ActivityManager .
2 Answers
2
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Using braces with dynamic variable names in PHP
...t $variableName between {} :
${$variableName} = $value;
Using {} is only mandatory when the name of your variable is itself a composition of multiple values, like this :
${$variableNamePart1 . $variableNamePart2} = $value;
It is nevertheless recommended to always use {}, because it's more readable...
Why is the parent div height zero when it has floated children
...formatting context. See methods for containing floats for other techniques and containing floats for an explanation about why CSS was designed this way.
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What's the most efficient way to erase duplicates and sort a vector?
...to take a C++ vector with potentially a lot of elements, erase duplicates, and sort it.
23 Answers
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Active Record - Find records which were created_at before today
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Using ActiveRecord the standard way:
MyModel.where("created_at < ?", 2.days.ago)
Using the underlying Arel interface:
MyModel.where(MyModel.arel_table[:created_at].lt(2.days.ago))
Using a thin layer over Arel:
MyModel.where(MyModel[:created...
Counting occurrences in Vim without marking the buffer changed
...
To avoid the substitution, leave the second pattern empty, and add the “n” flag:
:%s/pattern-here//gn
This is described as an official tip.
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How can I change the language (to english) in Oracle SQL Developer?
I am running a non-english Windows 7 system, and apparently Oracle SQL Developer (version 3.0.04.34, 64-bit) tries to auto-guess my preferred language based on the OS. Is there any way to change the language to english?
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Ant task to run an Ant target only if a file exists?
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Available and Condition
<target name="check-abc">
<available file="abc.txt" property="abc.present"/>
</target>
<target name="do-if-abc" depends="check-abc" if="abc.present">
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</target>
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Substitute multiple whitespace with single whitespace in Python [duplicate]
...ity (if you'd rather avoid REs) is
' '.join(mystring.split())
The split and join perform the task you're explicitly asking about -- plus, they also do the extra one that you don't talk about but is seen in your example, removing trailing spaces;-).
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