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Numpy - add row to array
... np
from time import perf_counter, sleep
def time_it():
# Compare performance of two methods for adding rows to numpy array
py_array = [[0, 1, 2], [0, 2, 0]]
py_row = [4, 5, 6]
numpy_array = np.array(py_array)
numpy_row = np.array([4,5,6])
n_loops = 100
start_clock = p...
How to convert a Java 8 Stream to an Array?
...at the generated private one. A reference to a constructor should still perform better for lack of indirection and easier VM optimization, but churning has nothing to do with it.
– HTNW
Oct 29 '17 at 23:54
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How do I monitor the computer's CPU, memory, and disk usage in Java?
I would like to monitor the following system information in Java:
11 Answers
11
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What's the meaning of exception code “EXC_I386_GPFLT”?
...code is using a "non-canonical pointer" - meaning that a 64-bit address is formed in such a way that the upper 16 bits of the address aren't all copies of the top of the lower 48 bits (in other words, the top 16 bits of an address should all be 0 or all 1, based on the bit just below 16 bits). This ...
How to modify list entries during for loop?
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It's considered poor form. Use a list comprehension instead, with slice assignment if you need to retain existing references to the list.
a = [1, 3, 5]
b = a
a[:] = [x + 2 for x in a]
print(b)
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【转】用App Inventor 2实现电子围栏功能 - App应用开发 - 清泛IT社区，为创新赋能！
...taining the northwest and southeast coordinates of the current view in the form ((North West) (South East)).设置或获取地图的边界，值是一个包含了西北和东南坐标的嵌套列表，格式为((北西)(南东))CenterFromString地图中心Set the initial center coordinate of the map...
Passing variable number of arguments around
... va_list and use that va_list in your second function. Specifically;
void format_string(char *fmt,va_list argptr, char *formatted_string);
void debug_print(int dbg_lvl, char *fmt, ...)
{
char formatted_string[MAX_FMT_SIZE];
va_list argptr;
va_start(argptr,fmt);
format_string(fmt, argptr...
How to change an element's title attribute using jQuery
I have an form input element and want to change its title attribute. This has to be easy as pie, but for some reason I cannot find how to do this. How is this done, and where and how should I be searching on how to do this?
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Download file of any type in Asp.Net MVC using FileResult?
...tFileFromDisk(string fileName)
{
return File(directoryPath, "multipart/form-data", fileName);
}
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How to insert a newline in front of a pattern?
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In general, for $ followed by a string literal in single quotes bash performs C-style backslash substitution, e.g. $'\t' is translated to a literal tab. Plus, sed wants your newline literal to be escaped with a backslash, hence the \ before $. And finally, the dollar sign itself shouldn't be quot...