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Calculating a directory's size using Python?
... It is probably wise to add the '-x' option to the du command in order to confine the search to the filesystem. In other words, use ['du', '-shx', path] instead.
– Keith Hanlan
Sep 27 '17 at 20:35
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What is the LD_PRELOAD trick?
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LD_PRELOAD can by virtue of load order intercept application-specified hardcoded paths.
– Joshua
Jun 10 '11 at 16:05
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Python Logging (function name, file name, line number) using a single file
...all calls to a single log file or other output target: they will be in the order they occurred in the process.
Next up: (2). locals() provides a dict of the current scope. Thus, in a method that has no other arguments, you have self in scope, which contains a reference to the current instance. The ...
warning: implicit declaration of function
...clude "SSD1306_LCD.h"
Exactly the same #include list, just different order.
Well, it did for me.
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How can I include a YAML file inside another?
... consume an inordinate amount of time because of recursive search.
In order to enable recursive argument, we shall write the !include tag in Mapping or Sequence mode:
Arguments in Sequence mode:
!include [tests/data/include.d/**/*.yaml, true]
Arguments in Mapping mode:
!include {pathna...
地图组件（高德地图） · App Inventor 2 中文网
...特征多少，是否透明。1 ~ 7 可以自行试试效果。
如有问题，点此参与讨论。
中心坐标字串
设置地图的初始中心坐标（纬度,经度），以英文逗号分隔的十进制经纬度坐标形式指定，例如：39.903179, 116.397427（天安门）。
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Parameterize an SQL IN clause
...ike '%|' + 'pe%ter' + '|%'
But that same row will not be returned if the order of the search terms is reversed:
select ...
where '|butter|peanut|' like '%|' + 'pe%ter' + '|%'
The behavior we observe is kind of odd. Changing the order of the search terms in the list changes the result set.
It...
Floating point vs integer calculations on modern hardware
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This "benchmark" has no data parallelism for out-of-order execution, because every operation is done with the same accumulator (v). On recent Intel designs, divide isn't pipelined at all (divss/divps has 10-14 cycle latency, and the same reciprocal throughput). mulss however...
Is there any advantage of using map over unordered_map in case of trivial keys?
A recent talk about unordered_map in C++ made me realize that I should use unordered_map for most cases where I used map before, because of the efficiency of lookup ( amortized O(1) vs. O(log n) ). Most times I use a map, I use either int or std::string as the key type; hence, I've got...
How to echo with different colors in the Windows command line
... check carlos' color function -> http://www.dostips.com/forum/viewtopic.php?f=3&t=4453
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