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Export specific rows from a PostgreSQL table as INSERT SQL script
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edited Dec 28 '18 at 10:39
Abdellah Alaoui
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an...
Ruby class types and case statements
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answered Oct 11 '10 at 17:11
NakilonNakilon
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What is the relationship between UIView's setNeedsLayout, layoutIfNeeded and layoutSubviews?
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104
I'm still trying to figure this out myself, so take this with some skepticism and forgive me if...
Hexadecimal To Decimal in Shell Script
... perl:
$ perl -le 'print hex("FF");'
255
with printf :
$ printf "%d\n" 0xFF
255
with python:
$ python -c 'print(int("FF", 16))'
255
with ruby:
$ ruby -e 'p "FF".to_i(16)'
255
with node.js:
$ nodejs <<< "console.log(parseInt('FF', 16))"
255
with rhino:
$ rhino<<EOF
prin...
How to copy files from 'assets' folder to sdcard?
...m in, OutputStream out) throws IOException {
byte[] buffer = new byte[1024];
int read;
while((read = in.read(buffer)) != -1){
out.write(buffer, 0, read);
}
}
Reference : Move file using Java
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Rails :dependent => :destroy VS :dependent => :delete_all
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202
The difference is with the callback.
The :delete_all is made directly in your application and ...
How to pass a user defined argument in scrapy spider
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190
Spider arguments are passed in the crawl command using the -a option. For example:
scrapy crawl...
mysql - how many columns is too many?
I'm setting up a table that might have upwards of 70 columns. I'm now thinking about splitting it up as some of the data in the columns won't be needed every time the table is accessed. Then again, if I do this I'm left with having to use joins.
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When to use f:viewAction / preRenderView versus PostConstruct?
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120
When should one use the f:viewAction or preRenderView event to initialize data for a page verse...
How can I save an image with PIL?
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Abhishek kumar
10366 bronze badges
answered Jan 23 '13 at 3:42
mmgpmmgp
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