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Real world use cases of bitwise operators [closed]
...r to make some piece of hardware do what you want it to:
volatile uint32_t *register = (volatile uint32_t *)0x87000000;
uint32_t value;
uint32_t set_bit = 0x00010000;
uint32_t clear_bit = 0x00001000;
value = *register; // get current value from the registe...
Why do Java programmers like to name a variable “clazz”? [closed]
..."class" is what you want, but abbreviating or inserting junk ("a", "the", "_", etc) reduces clarity. clazz just says class. "International" English speakers (those reading both British and American English) are used to transposing 's' and 'z'.
Since Java has had disclosed source and a suitable cult...
VIM Replace word with contents of paste buffer?
...th the change command to go anywhere, you can use the black hole register "_: "_cw. Then once in insert mode, you can hit ctrl-R followed by the register you want (probably ") to put in the contents of that register.
"* - selection register (middle-button paste)
"+ - clipboard register (probably a...
Specifically, what's dangerous about casting the result of malloc?
... to prevent this error is mostly the same reasoning as writing
if (0 == my_var)
instead of
if (my_var == 0)
since the latter could lead to a serious bug if one would confuse = and ==, whereas the first one would lead to a compile error. I personally prefer the latter style since it better refl...
What is the correct way to create a single-instance WPF application?
... NativeMethods.PostMessage(
(IntPtr)NativeMethods.HWND_BROADCAST,
NativeMethods.WM_SHOWME,
IntPtr.Zero,
IntPtr.Zero);
}
}
}
NativeMethods.cs
// this class just wraps some Win32 stuff that we're going to use...
OpenSSH升级后不能登录的问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...顺利
具体情况这里http://pkgs.org/centos-6/ghettoforge-testing-x86_64/openssh-6.6.1p1-4.gf.el6.x86_64.rpm.html
备份原有源
cd /etc/yum.repos.d/
mv rhel-source.repo rhel-source.repo.bak
mv packagekit-media.repo packagekit-media.repo.bak
配置源
vi CentOS-Base.repo
[base]
name...
How to write a CSS hack for IE 11? [duplicate]
...ht of the evolving thread, I have updated the below:
IE 11 (and above..)
_:-ms-fullscreen, :root .foo { property:value; }
IE 10 and above
_:-ms-lang(x), .foo { property:value; }
or
@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
.foo{property:value;}
}
IE 10 only...
Change column type from string to float in Pandas
...
You have four main options for converting types in pandas:
to_numeric() - provides functionality to safely convert non-numeric types (e.g. strings) to a suitable numeric type. (See also to_datetime() and to_timedelta().)
astype() - convert (almost) any type to (almost) any other type ...
Can an AJAX response set a cookie?
...swered Jul 27 '10 at 4:46
this. __curious_geekthis. __curious_geek
40.1k2020 gold badges105105 silver badges132132 bronze badges
...
Difference between \w and \b regular expression meta characters
...ters" are "non-word characters".
In all flavors, the characters [a-zA-Z0-9_] are word characters. These are also matched by the short-hand character class \w. Flavors showing "ascii" for word boundaries in the flavor comparison recognize only these as word characters.
\w stands for "word character...