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How to debug PDO database queries?
...fore moving to PDO, I created SQL queries in PHP by concatenating strings. If I got database syntax error, I could just echo the final SQL query string, try it myself on the database, and tweak it until I fixed the error, then put that back into the code.
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Formatting a float to 2 decimal places
..."{0:$#,##0.00;($#,##0.00);Zero}", value);
This will output “$1,240.00″ if passed 1243.50. It will output the same format but in parentheses if the number is negative, and will output the string “Zero” if the number is zero.
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Eclipse menus don't show up after upgrading to Ubuntu 13.10
...ipse 4.3.0, menus were not visible.
So I realise that it might be helpful if I clarify myself, the desktop shortcut file for Eclipse would contain something like this:
[Desktop Entry]
Version=4.3.0
Name=Eclipse
Comment=IDE for all seasons
#Exec=/home/USERNAME/Dokument/eclipse/eclipse
Exec=env UBUN...
Restful way for deleting a bunch of items
In wiki article for REST
it is indicated that if you use http://example.com/resources DELETE, that means you are deleting the entire collection.
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Closing Hg Branches
...in/bash
#script to close the not required branch in mercurial
hg up -C $1
if [ $? -eq 0 ]; then
echo "$1 is up"
else
echo "branch not found, please recheck your argument"
exit 1
fi
# if we are here then the branch is up, so we do the following
hg commit --close-branch -m 'this branch n...
Where is Java Installed on Mac OS X?
...d on a terminal shell to figure out where is your Java 1.8 home directory
If you just want to find out the home directory of your most recent version of Java, omit the version. e.g. /usr/libexec/java_home
share
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Command to get nth line of STDOUT
... @LeoUfimtsev: the p is the sed statement that prints the lines identified by the range of lines that precedes it. Thus 2,4p means print lines 2, 3, 4.
– Jonathan Leffler
Dec 6 '17 at 23:03
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How do I set $PATH such that `ssh user@host command` works?
...ult Ubuntu ~/.bashrc file. It usually starts with something like this:
# If not running interactively, don't do anything
[ -z "$PS1" ] && return
You want to put anything for non-interactive shells before this line.
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How to get the last element of a slice?
...
@tom10271 Yes, you can't get the last element of a slice if there's no such element, ie. if there are no elements at all.
– Toni Cárdenas
Aug 16 '19 at 11:20
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How to make a class JSON serializable
... "/foo/bar"}'
In that case you can merely call json.dumps(f.__dict__).
If you want more customized output then you will have to subclass JSONEncoder and implement your own custom serialization.
For a trivial example, see below.
>>> from json import JSONEncoder
>>> class MyEn...