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How to limit the maximum value of a numeric field in a Django model?
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Shell脚本编程30分钟入门 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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# 这是一个自动打ipa的脚本，基于webfrogs的ipa-build书写：https://github.com/webfrogs/xcode_shell/blob/master/ipa-build
# 功能：自动为etao ios app打包，产出物为14个渠道的ipa包
# 特色：全自动打包，不需要输入任何参数
#--------------------------...
How to horizontally center a
..., you can use transform:translateX(-50%); instead of the negative margin.
https://jsfiddle.net/gjvfxxdj/
With CSS calc(), the code can get even simpler:
.centered {
width: 200px;
position: absolute;
left: calc(50% - 100px);
}
The principle is still the same; put the item in the middle ...
Disable all table constraints in Oracle
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This is another way for disabling constraints (it came from https://asktom.oracle.com/pls/asktom/f?p=100:11:2402577774283132::::P11_QUESTION_ID:399218963817)
WITH qry0 AS
(SELECT 'ALTER TABLE '
|| child_tname
|| ' DISABLE CONSTRAINT '
...
What is the significance of load factor in HashMap?
...!
Perfect illustration answered this question:
image is taken from here:
https://javabypatel.blogspot.com/2015/10/what-is-load-factor-and-rehashing-in-hashmap.html
What is the difference between XMLHttpRequest, jQuery.ajax, jQuery.post, jQuery.get
...where anyone can test version from version which one is best at any time:
https://jsperf.com/xhr-vs-jquery-ajax-vs-get-vs-fetch
From my tests today shows that only jQuery isn't a clean or even a fast solution, the results for me in mobile or desktop shows that jQuery are, at least, 80% slower than...
How to achieve function overloading in C?
... "world";
printf("%s\n", add(c, d)); // hello world
return 0;
}
https://gist.github.com/barosl/e0af4a92b2b8cabd05a7
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Why unsigned integer is not available in PostgreSQL?
...d a lot, just too much work from my experience working with C programming.
https://www.postgresql.org/docs/10/datatype-numeric.html
integer 4 bytes typical choice for integer -2147483648 to +2147483647
serial 4 bytes autoincrementing integer 1 to 2147483647
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How do I use CSS in Django?
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image processing to improve tesseract OCR accuracy
...tesseract sometimes helps.
Try different modes of interpolation. The post https://stackoverflow.com/a/4756906/146003 helped me a lot.
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