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Passing functions with arguments to another function in Python?
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What if perform and action1, action2 on different files? @S.Lott
– alper
Sep 2 '19 at 18:47
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How to get primary key column in Oracle?
...nstraints cons, all_cons_columns cols
WHERE cols.table_name = 'TABLE_NAME'
AND cons.constraint_type = 'P'
AND cons.constraint_name = cols.constraint_name
AND cons.owner = cols.owner
ORDER BY cols.table_name, cols.position;
Make sure that 'TABLE_NAME' is in upper case since Oracle stores table name...
Using Python 3 in virtualenv
...irtualenv --no-site-packages python3.4' worked. --distribute is deprecated and -p doesn't seem necessary since virtualenv uses python3.
– alkopop79
Nov 10 '17 at 13:04
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How to get innerHTML of DOMNode?
...of the element, without having to use saveHTML that will output html, head and body tags.
– CONvid19
May 18 '16 at 14:53
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Why is “import *” bad?
...f into your namespace (might shadow some other object from previous import and you won't know about it).
Because you don't know exactly what is imported and can't easily find from which module a certain thing was imported (readability).
Because you can't use cool tools like pyflakes to statically ...
How do I check/uncheck all checkboxes with a button using jQuery?
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This will not work anymore, .toggle(handler, handler) was deprecated in jQuery 1.8 and removed in jQuery 1.9. Now all it does is toggles visibility.
– Himel Das
Apr 7 '16 at 14:59
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JS strings “+” vs concat method [duplicate]
I have some experience with Java and I know that strings concatenation with "+" operator produces new object.
5 Answers
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Avoid trailing zeroes in printf()
...ll remove all but the first N decimals, then strip off the trailing zeros (and decimal point if they were all zeros).
char str[50];
sprintf (str,"%.20g",num); // Make the number.
morphNumericString (str, 3);
: :
void morphNumericString (char *s, int n) {
char *p;
int count;
p = str...
The Concept of 'Hold space' and 'Pattern space' in sed
I'm confused by the two concepts in sed: hold space and pattern space. Can someone help explain them?
3 Answers
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How to install the JDK on Ubuntu Linux
...repository:
sudo add-apt-repository ppa:openjdk-r/ppa # only Ubuntu 17.4 and earlier
sudo apt update
Optional: To search available distributions of openjdk, use the following command:
apt search openjdk
Install the appropriate version with the following command:
sudo apt install openjdk-8-jdk
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