大约有 13,700 项符合查询结果（耗时：0.0426秒） [XML]
How to programmatically set style attribute in a view
...lour when it's pressed, you could define an XML file called res/drawable/my_button.xml directory like this:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:state_pressed="true"
android:drawable="@dra...
How to unzip files programmatically in Android?
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<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
– Lou Morda
Jul 27 '12 at 22:00
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Default value in Doctrine
...ple solution for my specific case and is to set the field type option empty_data to a default value.
Again, this solution is only for the scenario where an empty input in a form sets the DB field to null.
Background
None of the previous answers helped me with my specific scenario but I found a so...
Find the index of a dict within a list, by matching the dict's value
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tom_index = next((index for (index, d) in enumerate(lst) if d["name"] == "Tom"), None)
# 1
If you need to fetch repeatedly from name, you should index them by name (using a dictionary), this way get operations would be O(1) ti...
Create a branch in Git from another branch
... newbies, this is what a --no-ff merge looks like
– A__
Oct 6 '18 at 23:01
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How can I create directories recursively? [duplicate]
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note, exist_ok=True is convenient to save having to check if it exists first every time.
– ideasman42
Jan 10 '15 at 3:57
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Creating a daemon in Linux
...#include <sys/stat.h>
#include <syslog.h>
static void skeleton_daemon()
{
pid_t pid;
/* Fork off the parent process */
pid = fork();
/* An error occurred */
if (pid < 0)
exit(EXIT_FAILURE);
/* Success: Let the parent terminate */
if (pid > 0)...
How to find out if an item is present in a std::vector?
...ctor>
if ( std::find(vec.begin(), vec.end(), item) != vec.end() )
do_this();
else
do_that();
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Converting String to Int with Swift
... var value: Int { string.digits.integer ?? 0 }
var maxValue: Int = 999_999_999
private var lastValue: Int = 0
override func willMove(toSuperview newSuperview: UIView?) {
// adds a target to the textfield to monitor when the text changes
addTarget(self, action: #selector...
Why does Java switch on contiguous ints appear to run faster with added cases?
...TR [rsp-0x6000],eax
; {no_reloc}
0x00000000024f0167: push rbp
0x00000000024f0168: sub rsp,0x10 ;*synchronization entry
; - javaapplication4.Test1::multiplyByPowerOfTen@-1 (line 56)
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