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Best way to format integer as string with leading zeros? [duplicate]
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answered Apr 9 '09 at 9:23
unbeknownunbeknown
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How to loop through all but the last item of a list?
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slhck
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answered May 27 '09 at 9:04
freespacefre...
What does the keyword “transient” mean in Java? [duplicate]
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answered Mar 9 '11 at 12:14
schnaaderschnaader
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2025年9月3日签到记录贴 - 签到区 - 清泛IT社区，为创新赋能！
...成的,如果您还未签到,请点此进行签到的操作. 我在 2025-09-03 06:36 完成签到,是今天第一个签到的用户,获得随机奖励 小红花 4,另外我还额外获得了 小红花 10.我今天最想说:「该会员没有填写今日想说内容.」. 我在 2025-09-03 07:17 完...
MySql - Way to update portion of a string?
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Madara's Ghost
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answered Dec 9 '09 at 20:47
Kaleb BraseeKaleb...
How to write a CSS hack for IE 11? [duplicate]
...ated a nice little IE Sniffer that works for IE 6-11: jsfiddle.net/Realto619/HfuXT Hopefully someone else finds it useful as well...
– Realto619
Apr 11 '14 at 19:52
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How to check whether a string is Base64 encoded or not
...ular expression to check if a string is base64 encoded or not:
^([A-Za-z0-9+/]{4})*([A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{2}==)?$
In base64 encoding, the character set is [A-Z, a-z, 0-9, and + /]. If the rest length is less than 4, the string is padded with '=' characters.
^([A-Za-z0-9+/]{4})* means t...
Postgres: INSERT if does not exist already
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Postgres 9.5 (released since 2016-01-07) offers an "upsert" command, also known as an ON CONFLICT clause to INSERT:
INSERT ... ON CONFLICT DO NOTHING/UPDATE
It solves many of the subtle problems you can run into when using concurre...
How to change the order of DataFrame columns?
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One easy way would be to reassign the dataframe with a list of the columns, rearranged as need...
JPA or JDBC, how are they different?
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edited Sep 26 '18 at 10:09
Matthias Braun
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a...