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Why would I ever use push_back instead of emplace_back?
...f an implicit constructor is the conversion from std::uint32_t to std::uint64_t. A bad example of an implicit conversion is double to std::uint8_t.
We want to be cautious in our programming. We do not want to use powerful features because the more powerful the feature, the easier it is to accidenta...
Run an app on a multiple devices automatically in Android Studio
....42.35.5791312, built on August 9, 2019
JRE: 1.8.0_202-release-1483-b03 amd64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Windows Server 2016 10.0
In this update they have added in-built option to run application on multiple devices.
The IDE has a new drop-down menu that lets you quickly ...
企业级负载平衡简介 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... a google.com
google.com has address 72.14.207.99
google.com has address 64.233.167.99
google.com has address 64.233.187.99
$ host -t a google.com
google.com has address 64.233.187.99
google.com has address 72.14.207.99
google.com has address 64.233.167.99
可以看到，不同的DNS...
Android Emulator: Installation error: INSTALL_FAILED_VERSION_DOWNGRADE
...integer/app_version_code"
app.xml:
<integer name="app_version_code">64</integer>
This wasn't a problem in prior versions of adb, however, as of platform-tools r16 this is no longer being resolved to the proper integer. You can either force the re-install using adb -r or avoid the iss...
Convert from ASCII string encoded in Hex to plain ASCII?
... here's one of the shortest, using only python-provided stuff:
import base64
hex_data ='57696C6C20796F7520636F6E76657274207468697320484558205468696E6720696E746F20415343494920666F72206D653F2E202E202E202E506C656565656173652E2E2E212121'
ascii_string = str(base64.b16decode(hex_data))[2:-1]
print (ascii...
Determine which MySQL configuration file is being used
...qld.
Among all the other system calls, you will find something like:
stat64("/etc/my.cnf", 0xbfa3d7fc) = -1 ENOENT (No such file or directory)
stat64("/etc/mysql/my.cnf", {st_mode=S_IFREG|0644, st_size=4227, ...}) = 0
open("/etc/mysql/my.cnf", O_RDONLY|O_LARGEFILE) = 3
So, as you can see.....
Unable to create Android Virtual Device
...wing :
Check if there exist a "default" folder in adt-bundle-windows-x86_64-20131030\sdk\system-images\android-17.
If it exists then move the contents(downloaded system images) of the "default" folder to
adt-bundle-windows-x86_64-20131030\sdk\system-images\android-17.
Hope this helps.
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Upload failed You need to use a different version code for your APK because you already have one wit
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How to change the default charset of a MySQL table?
...stmt`;
END$$
CREATE PROCEDURE `change_character_set`(IN `charset` VARCHAR(64), IN `collation` VARCHAR(64))
BEGIN
DECLARE `done` BOOLEAN DEFAULT FALSE;
DECLARE `tab_name` VARCHAR(64);
DECLARE `charset_cursor` CURSOR FOR
SELECT `table_name` FROM `information_schema`.`tables`
WHERE `table_sch...
iOS开发调试技巧总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...e
//这里执行的是release模式下
#endif
（2）__i386__ 与 __x86_64__ ：用于模拟器环境和真机环境的判断。满足该条件的代码只在模拟器下执行。示例代码如下：
#ifdefined(__i386__)||defined(__x86_64__)
//模拟器下执行
#else
//真机下执行...