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What is the Swift equivalent to Objective-C's “@synchronized”?
...ct inside of swift for this yet.
I did make up this small helper function based on some of the code I've seen from Matt Bridges and others.
func synced(_ lock: Any, closure: () -> ()) {
objc_sync_enter(lock)
closure()
objc_sync_exit(lock)
}
Usage is pretty straight forward
synced...
HuaweiCloud 拓展：App接入华为云（AppGallery Connect）BaaS · App Inventor 2 中文网
...它组件设置 HuaweiCloudAuth 属性引用它即可复用：
TriggerBaseUrl：云函数 HTTP 触发器基础地址，组件会把它与函数名拼成完整 URL（base/函数名）。也可在方法里直接传完整触发器 URL。
ApiKey：可选，作为请求头 x-api-key 发给云函数...
What represents a double in sql server?
...
I have to concur, and admit I was off base. I was introduced to decimal in the IBM DB2 world, where decimal is a real data type, supported by all flavors of code and the database on IBM platforms. Not that it isn't a real datatype in the MS world, but it is not...
converting Java bitmap to byte array
... to encode bitmap into byte[] and vice versa
public static String encodeTobase64(Bitmap image) {
Bitmap immagex = image;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
immagex.compress(Bitmap.CompressFormat.PNG, 90, baos);
byte[] b = baos.toByteArray();
String imageEn...
Java Security: Illegal key size or default parameters?
...
@JamesBlack - Yep, and to make sure all the bases were covered I put the JAR's under Java/jre/lib/security, Java/jdk/lib/security, and Java/jdk/jre/lib/security. Running 'java -version' returns the expected details.
– aroth
Oct 2...
How do I select a random value from an enumeration?
...afe and will start returning zeroes when it breaks. I've updated my answer based on this info.
– WHol
Aug 4 '15 at 15:23
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Linux MySql编译安装 - 更多技术 - 清泛网 - 专注C/C++及内核技术
Linux MySql编译安装安装环境：centos 6.4 x86_64curl -O http: cdn.mysql.com Downloads MySQL-5.6 mysql-5.6.12.tar.gztar -zxf mysql-5.6.12cd mysq...安装环境：centos 6.4 x86_64
#下载mysql源码包
curl -O http://cdn.mysql.com/Downloads/MySQL-5.6/mysql-5.6.12.tar.gz
tar -zxf mysql-5....
OpenSuSE 安装bpftrace - 操作系统(内核) - 清泛网 - 专注IT技能提升
...zypper install bcc-devel
#zypper install bcc-devel-0.22.0-lp151.127.1.x86_64 #安装失败的话，可以尝试
3、安装bpftrace（参考：INSTALL.md）：
OCICLI https://software.opensuse.org/ymp/home:pavlix:Kernel/openSUSE_Leap_15.1/bpftrace.ymp
4、验证：
bpftrace
USAGE:
...
OpenSuSE 安装bpftrace - 操作系统(内核) - 清泛网 - 专注IT技能提升
...zypper install bcc-devel
#zypper install bcc-devel-0.22.0-lp151.127.1.x86_64 #安装失败的话，可以尝试
3、安装bpftrace（参考：INSTALL.md）：
OCICLI https://software.opensuse.org/ymp/home:pavlix:Kernel/openSUSE_Leap_15.1/bpftrace.ymp
4、验证：
bpftrace
USAGE:
...
OpenSuSE 安装bpftrace - 操作系统(内核) - 清泛网移动版 - 专注IT技能提升
...zypper install bcc-devel
#zypper install bcc-devel-0.22.0-lp151.127.1.x86_64 #安装失败的话，可以尝试
3、安装bpftrace（参考：INSTALL.md）：
OCICLI https://software.opensuse.org/ymp/home:pavlix:Kernel/openSUSE_Leap_15.1/bpftrace.ymp
4、验证：
bpftrace
USAGE:
...