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Which timestamp type should I choose in a PostgreSQL database?
..._Angeles';
SET
test=> INSERT INTO my_tbl (my_timestamp) VALUES (NOW());
ERROR: new row for relation "my_tbl" violates check constraint "my_tbl_my_timestamp_check"
test=> SET timezone = 'UTC';
SET
test=> INSERT INTO my_tbl (my_timestamp) VALUES (NOW());
INSERT 0 1
It's not 100% perfect, b...
Check if an image is loaded (no errors) with jQuery
...d in a unordered list. When the image is loaded it does one thing, when an error occurs it does something else. I'm using jQuery load() and error() methods as events. After these events I check the image DOM element for the .complete to make sure the image wasn't already loaded before jQuery co...
Understanding promises in Node.js
...s was that they were emitters that could emit only two events: success and error.
The cool thing about promises is you can combine them into dependency chains (do Promise C only when Promise A and Promise B complete).
By removing them from the core node.js, it created possibility of building up mo...
汇编常用寄存器及指令基础总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...寄存器及指令基础总结8086汇编常用寄存器数据寄存器AH&AL=AX：累加寄存器，常用于运算BH&BL=BX：基址寄存器，常用于地址索引CH&CL=CX：计数寄存器，常用于计数DH...8086汇编常用寄存器
数据寄存器
AH&AL=AX：累加寄存器，常用于运...
Print second last column/field in awk
I want to print the second last column or field in awk. The number of fields is variable. I know that I should be able to use $NF but not sure how it can be used.
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Equivalent of .try() for a hash to avoid “undefined method” errors on nil? [duplicate]
In Rails we can do the following in case a value doesn't exist to avoid an error:
12 Answers
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How to inflate one view with a layout
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I get an error: 02-25 22:21:19.324: ERROR/AndroidRuntime(865): Caused by: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
– Micha...
How to find the statistical mode?
...rsion 3.6.0, it says function 'could not find function "mlv"' and the same error when I tried mfv(mysamples). Is it depreciated?
– Dr Nisha Arora
Oct 18 '19 at 17:00
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Can a Byte[] Array be written to a file in C#?
I'm trying to write out a Byte[] array representing a complete file to a file.
8 Answers
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How do I start a process from C#?
How do I start a process, such as launching a URL when the user clicks a button?
12 Answers
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