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Occurrences of substring in a string
...r = "helloslkhellodjladfjhello";
String findStr = "hello";
int lastIndex = 0;
int count = 0;
while(lastIndex != -1){
lastIndex = str.indexOf(findStr,lastIndex);
if(lastIndex != -1){
count ++;
lastIndex += findStr.length();
}
}
System.out.println(count);
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How can I temporarily disable a foreign key constraint in MySQL?
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10 Answers
10
Active
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Paste multiple times
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109
I have this in my .vimrc:
xnoremap p pgvy
(note: this will work only with the default regist...
Python: List vs Dict for look up table
I have about 10million values that I need to put in some type of look up table, so I was wondering which would be more efficient a list or dict ?
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Transitioning from Windows Forms to WPF
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edited Feb 8 '17 at 14:40
Community♦
111 silver badge
answered Mar 28 '13 at 14:32
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What is the difference between declarative and imperative programming? [closed]
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809
A great C# example of declarative vs. imperative programming is LINQ.
With imperative programm...
List comprehension: Returning two (or more) items for each item
...>>> list(chain.from_iterable((f(x), g(x)) for x in range(3)))
[2, 0, 3, 1, 4, 4]
Timings:
from timeit import timeit
f = lambda x: x + 2
g = lambda x: x ** 2
def fg(x):
yield f(x)
yield g(x)
print timeit(stmt='list(chain.from_iterable((f(x), g(x)) for x in range(3)))',
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What are the undocumented features and limitations of the Windows FINDSTR command?
...eOffset: = The decimal byte offset of the start of the matching line, with 0 representing the 1st character of the 1st line. Only printed if /O option is specified. This is not the offset of the match within the line. It is the number of bytes from the beginning of the file to the beginning of the l...
App Inventor 2 PhoneInfo 拓展：获取手机等设备软硬件、版本等相关信息 ·...
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GetDeviceID
获取设备ID。Android 10+不支持！
GetPhoneNumber
获取本机手机号码。无SIM卡设备将返回空文本；双SIM卡设备将返回主卡号码。Android 10+不支持！
注：这个方法采用的是较常规的...
Get Bitmap attached to ImageView
...rslan Anwar
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