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php Replacing multiple spaces with a single space [duplicate]
...t/manual/en/function.mb-ereg-replace.php
– Juha Palomäki
Oct 3 '16 at 13:03
1
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Negative matching using grep (match lines that do not contain foo)
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@OlleHärstedt, I think I misunderstood your scenario in my previous comment, the following may be what you're looking for grep "" /dev/null * | grep foo | grep -v bar | cut -d: -f1 | sort -u (why the first grep?, there's always a ...
UILabel Align Text to center
... Apr 30 '18 at 11:58
Linus Unnebäck
14k99 gold badges5959 silver badges7575 bronze badges
answered Jul 12 '12 at 8:20
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Easy interview question got harder: given numbers 1..100, find the missing number(s) given exactly k
...omial (x-a1)...(x-ak) the coefficients will be exactly c1, ..., ck - see Viète's formulas. Since every polynomial factors uniquely (ring of polynomials is an Euclidean domain), this means ai are uniquely determined, up to permutation.
This ends a proof that remembering powers is enough to recover ...
SQLAlchemy: What's the difference between flush() and commit()?
...ed Jan 6 '18 at 8:55
Ilja Everilä
36.5k55 gold badges7272 silver badges8686 bronze badges
answered Nov 17 '10 at 6:25
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代码坏味道(总结) - C/C++ - 清泛网 - 专注C/C++及内核技术
...peculative Generality（夸夸其谈未来性）
过多的考虑将来的拓展，有时往往造成更坏的结果。用不上的东西抛弃掉。
14.Temporary Field（令人迷惑的暂时字段）
使用了让人很难理解的临时变量。
15.Message Chains（过度耦合...
error C2143:语法错误 : 缺少“;”(在“*”的前面) error C4430:缺少类型说...
...中是不是定义类成员变量时没有包含相应的头文件。
拓展：
.h中定义类对象成员变量必须include头文件；
相反，.h中定义类指针成员变量时可以不用include类的头文件，只需要申明一下（如 class CTest;）即可，链接过程中必须...
error: ISO C++ forbids declaration of \'XXXX\' with no type - C/C++ - 清泛网 - 专注C/C++及内核技术
...ainwindow.h"
class ConfigDialog {
class MainWindow *mainWindow;
};
拓展：class 修饰后，只申明，不分配内存。头文件也可省略不写，但必须是以指针的形式申明。
class Declare;（√）
class Declare *dec;（√）
class Declare dec; （×）C...
char类型移动跨平台踩过的坑 - C/C++ - 清泛网 - 专注IT技能提升
...序时要特别注意char和unsigned char，最好使用unsigned char。
拓展：https://www.cnblogs.com/lsgxeva/p/10913024.html
Yahoo收购时尚电商 价格未披露 - 资讯 - 清泛网 - 专注C/C++及内核技术
...与雅虎时尚频道密切合作，而这笔收购似乎是这一合作的拓展。
官方公告称：“通过集成社区和商务，Polyvore将加强雅虎的数字杂志和垂直内容。在合并之后，雅虎和Polyvore将提供原生购物广告，给零售商带来流量和销售额。
Y...