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How can I profile Python code line-by-line?
...hreads 0 demo/threads.py
Command line: ['demo/threads.py']
Total duration: 1.00573s
File: demo/threads.py
File duration: 1.00168s (99.60%)
Line #| Hits| Time| Time per hit| %|Source code
------+----------+-------------+-------------+-------+-----------
1| 2| 3.21865e-...
How to implement a unique index on two columns in rails
...t different syntax for specifying the columns.
– François Beausoleil
Nov 8 '10 at 13:30
14
...
Line-breaking widget layout for Android
...rs.xml, which you can create if it's not already there.
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="RowLayout">
<attr name="android:verticalSpacing" />
<attr name="android:horizontalSpacing" />
</declare-stylea...
How can I assign an ID to a view programmatically?
...ains unique:
Here, values/ids.xml defines a custom id:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<item name="reservedNamedId" type="id"/>
</resources>
Then once the ViewGroup or View has been created, you can attach the custom id
myViewGroup.setId(R.id.reser...
Usage of forceLayout(), requestLayout() and invalidate()
...
To better understand answers provided by François BOURLIEUX and Dalvik I suggest you take a look at this awesome view lifecycle diagram by Arpit Mathur:
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impro...
Xcode Project vs. Xcode Workspace - Differences
...ile, you will find the contents.xcworkspacedata file.
<?xml version="1.0" encoding="UTF-8"?>
<Workspace
version = "1.0">
<FileRef
location = "group:BluetoothColorLamp24G.xcodeproj">
</FileRef>
<FileRef
location = "group:Pods/Pods.xcodeproj">
...
Java HTTPS client certificate authentication
...
Maven pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4....
Excel: last character/string match in a string
...ted Oct 17 '14 at 7:40
Jean-François Corbett
33.6k2525 gold badges124124 silver badges172172 bronze badges
answered Sep 4 '13 at 15:19
...
移动前端开发之viewport的深入理解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...中：
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
该meta标签的作用是让当前viewport的宽度等于设备的宽度，同时不允许用户手动缩放。也许允不允许用户缩放不同的网站有不同的要求，但让v...
When should I use C++14 automatic return type deduction?
... we could probably work it out but we don't need to say it". When we write 1.0 + 27U we're asserting the latter, when we write (double)1.0 + (double)27U we're asserting the former. Simplicity of the function, degree of duplication, avoiding decltype might all contribute to that but none is going to ...