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How can I count the number of matches for a regex?
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177
matcher.find() does not find all matches, only the next match.
Solution for Java 9+
long mat...
Array initializing in Scala
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143
scala> val arr = Array("Hello","World")
arr: Array[java.lang.String] = Array(Hello, World)
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Cron job every three days
Is it possible to run a cronjob every three days? Or maybe 10 times/month.
11 Answers
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Controlling maven final name of jar artifact
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edited May 23 '17 at 10:31
Community♦
111 silver badge
answered Jan 23 '13 at 22:34
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How to crop an image using PIL?
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201
There is a crop() method:
w, h = yourImage.size
yourImage.crop((0, 30, w, h-30)).save(...)
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lua和c/c++互相调用实例分析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...引，索引值为负时表示相对于栈顶的偏移索引，索引值以1或-1为起始值，因此栈顶索引值永远为-1 ,栈底索引值永远为1 。 "栈"相当于数据在lua和c/c++之间的中转地。每种数据都有相应的存取接口 。
数据入"栈"接口：
void (lua_push...
Understanding recursion [closed]
...ot empty, you take out one flower
and then you empty a vase containing N-1 flowers.
Hmm, can we see that in code?
void emptyVase( int flowersInVase ) {
if( flowersInVase > 0 ) {
// take one flower and
emptyVase( flowersInVase - 1 ) ;
} else {
// the vase is empty, nothing to do...
What does the caret operator (^) in Python do?
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177
It's a bitwise XOR (exclusive OR).
It results to true if one (and only one) of the operands (...
Is there anyway to exclude artifacts inherited from a parent POM?
.../groupId>
<artifactId>log4j</artifactId>
<version>1.2.15</version>
<scope>provided</scope>
<exclusions>
<exclusion>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
</exclusion>
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