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你好世界 · App Inventor 2 中文网
... 关键设置
列表选择器
列表选择器_语言
提示：选择语言
标签
标签_问候
初始文本留空
标签
标签_提示
显示当前语言
文本朗读器
文本朗读器...
日期计算器与倒数日：日期选择框取前一天、日期加减、相差天数（附 .aia 源...
...M-dd"), " ", 星期表[计时器1.Weekday(时刻)])
}
when 日期选择框_日期.AfterDateSet() {
var 选中 = 日期选择框_日期.Instant
标签_日期结果.Text = join("选中：", 日期文字(选中), "\n前一天：", 日期文字(计时器1.AddDays(选中, -1)), "\n后一天：", 日...
文本文件读写助手：创建、追加一行、读最后一行、统计行数（附 .aia 源码）...
...——不能在调用 ReadFrom 的下一句就去用内容。
when 按钮_保存.Click() {
文件管理器1.SaveFile(join(文本输入框_内容.Text, "\n"), join("notes/", 文本输入框_文件名.Text))
}
when 按钮_追加.Click() {
文件管理器1.AppendToFile(join(文本输入框_内容...
Does Swift support reflection?
...Have a look the answer stackoverflow.com/a/25345461/292145 to find out how _stdlib_getTypeName can help.
– Klaas
Aug 17 '14 at 1:14
1
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Django - filtering on foreign key properties
...
Asset.objects.filter( project__name__contains="Foo" )
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Can (domain name) subdomains have an underscore “_” in it?
Can subdomains (domain names) have underscore _ in them?
11 Answers
11
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How to convert CFStringRef to NSString?
...e using ARC, the new casting syntax is as follows:
NSString *aNSString = (__bridge NSString *)aCFString;
works as well. The key thing to note is that CoreFoundation will often return objects with +1 reference counts, meaning that they need to be released (all CF[Type]Create format functions do th...
Reimport a module in python while interactive
...from the importlib library instead:
import importlib
importlib.reload(some_module)
If you are using python 3.2 or 3.3 you should:
import imp
imp.reload(module)
instead. See http://docs.python.org/3.0/library/imp.html#imp.reload
If you are using ipython, definitely consider using the autor...
How to detect total available/free disk space on the iPhone/iPad device?
...
Original answer:
I found the following solution working for me:
-(uint64_t)getFreeDiskspace {
uint64_t totalSpace = 0;
uint64_t totalFreeSpace = 0;
NSError *error = nil;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSDic...
Installing Python packages from local file system folder to virtualenv with pip
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The equivalent easy_install command is easy_install --allow-hosts=None --find-links file:///srv/pkg/mypackage mypackage
– Wilfred Hughes
Dec 13 '17 at 16:23
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