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adb not finding my device / phone (MacOS X)

...w on port 5037 * * daemon started successfully * List of devices attached 123ABC456DEF001 device share | improve this answer | follow | ...
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内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...

...内存到CentralCache里。 解决了ptmalloc2中arena之间不能迁移的问题。 Tcmalloc占用更少的额外空间。例如,分配N个8字节对象可能要使用大约8N * 1.01字节的空间。即,多用百分之一的空间。Ptmalloc2使用最少8字节描述一个chunk。 更快。...
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Database development mistakes made by application developers [closed]

...e NOT NULL and FOREIGN KEY if I’ll always control my database input with php? Are foreign keys really necessary in a database design? Are foreign keys really necessary in a database design? 3. Using natural rather than surrogate (technical) primary keys Natural keys are keys based on externally...
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getMinutes() 0-9 - How to display two digit numbers?

... (condition?true:false) in PHP you can omit the true statement (condition?:false) in JS you would then use (condition||false) Ternary operator en.wikipedia.org/wiki/Ternary_operation – llange Mar 16 '19 at 9:53 ...
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Difference between git stash pop and git stash apply

... 123 as @briankip's answer notes below, if there are conflicts when a stash is popped, pop will not remove the stash (and will behave exactly l...
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String formatting in Python 3

...nce at 0x00BF7260>' "games: {:>3}".format(player1.games) # 'games: 123' "games: {:>3}".format(player2.games) # 'games: 4' "games: {:0>3}".format(player2.games) # 'games: 004' Note: As others pointed out, the new format does not supersede the former, both are available both in Py...
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App Inventor 2 SQLite 拓展:超流行兼容主流SQL语法的迷你本地数据库引擎 ...

...但TaifunSQLite是收费的,美刀。 .aix 拓展下载: cn.fun123.SQLite.aix SQLite SQLite 是 Android 内置的小型、快速、独立的 SQL(结构化查询语言)数据库引擎。 SQL 语句用于创建、选择、更新和删除一个或多个表中的...
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Effect of a Bitwise Operator on a Boolean in Java

... 123 The operators &, ^, and | are bitwise operators when the operands are primitive integral t...
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Python os.path.join on Windows

... 123 To be even more pedantic, the most python doc consistent answer would be: mypath = os.path.jo...
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vim, switching between files rapidly using vanilla Vim (no plugins)

....html normal! mH autocmd BufLeave *.js normal! mJ autocmd BufLeave *.php normal! mP augroup END I recently found this gem in someone else's ~/.vimrc. It creates a file mark at the exact position of the cursor whenever you leave a buffer so that, wherever you are, 'J jumps to the latest Java...