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How do I find the duplicates in a list and create another list with them?
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converting your answer for set() to get duplicates only. seen = set() then dupe = set(x for x in a if x in seen or seen.add(x))
– Ta946
Apr 7 '19 at 7:41
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base64 encoded images in email signatures
...should have this:
<img src="cid: 111122223333">
There's no need to convert the byte array to Base64 because Commons Mail does the conversion for you automatically. Hope this helps.
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Removing numbers from string [closed]
...er.
result = ''.join(no_digits)
As @AshwiniChaudhary and @KirkStrauser point out, you actually do not need to use the brackets in the one-liner, making the piece inside the parentheses a generator expression (more efficient than a list comprehension). Even if this doesn't fit the requirements for ...
How to get IntPtr from byte[] in C#
I want to pass a byte[] to a method takes a IntPtr Parameter in C#, is that possible and how?
8 Answers
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Getting request payload from POST request in Java servlet
...(inputStream));
char[] charBuffer = new char[128];
int bytesRead = -1;
while ((bytesRead = bufferedReader.read(charBuffer)) > 0) {
stringBuilder.append(charBuffer, 0, bytesRead);
}
} else {
stringBuilder.append(""...
Auto increment in phpmyadmin
...d common practice to set an id number as a primiary key, auto incrementing int. There are alternatives such as using PHP to generate membership numbers for you in a specific format and then checking the number does not exist prior to inserting, however for me personally I'd go with the primary id au...
Choosing the best concurrency list in Java [closed]
...al Lock-Free Doubly-Linked List". It does not implement the java.util.List interface, but offers most methods you would use in a List.
According to the javadoc:
A concurrent linked-list implementation of a Deque
(double-ended queue). Concurrent insertion, removal, and access
operations exec...
MongoDB与内存 - 大数据 & AI - 清泛网移动版 - 专注IT技能提升
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shell> cat /proc/$(pidof mongod)/limits | grep stack | awk -F 'size' '{print int($NF)/1024}'
如果Stack过大（比如：10240K）的话没有意义，简单对照命令结果中的Size和Rss：
shell> cat /proc/$(pidof mongod)/smaps | grep 10240 -A 10
所有连接消耗的内存加起来会...
MongoDB与内存 - 大数据 & AI - 清泛网移动版 - 专注IT技能提升
...
shell> cat /proc/$(pidof mongod)/limits | grep stack | awk -F 'size' '{print int($NF)/1024}'
如果Stack过大（比如：10240K）的话没有意义，简单对照命令结果中的Size和Rss：
shell> cat /proc/$(pidof mongod)/smaps | grep 10240 -A 10
所有连接消耗的内存加起来会...
MongoDB与内存 - 大数据 & AI - 清泛网移动版 - 专注IT技能提升
...
shell> cat /proc/$(pidof mongod)/limits | grep stack | awk -F 'size' '{print int($NF)/1024}'
如果Stack过大（比如：10240K）的话没有意义，简单对照命令结果中的Size和Rss：
shell> cat /proc/$(pidof mongod)/smaps | grep 10240 -A 10
所有连接消耗的内存加起来会...