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How do I hide an element when printing a web page?
... I can't believe how did I miss the bootstrap solution until now.. Thank you!
– ReturnTable
Oct 30 '19 at 4:46
...
In a django model custom save() method, how should you identify a new object?
...ble, but named that way to avoid conflicts, checking self._state.adding is now the preferable way to check.
self.pk is None:
returns True within a new Model object, unless the object has a UUIDField as its primary_key.
The corner case you might have to worry about is whether there are uniquene...
Android: remove notification from notification bar
... with an event I manage to add notification in android notification bar. Now I need sample how to remove that notification from notification bar on an event ??
...
Package doesn't exist error in intelliJ
... tool window:
right click on root pom.xml,
press Add as Maven project,
now unignoring any ignored modules from Maven tool window:
select all ignored (grey) Maven modules,
right click on them,
press Unignore,
and finally rebuilding using Build > Rebuild project. This assumes that a mvn cle...
How to truncate a foreign key constrained table?
...ion 1:
Remove constraints
Perform TRUNCATE
Delete manually the rows that now have references to nowhere
Create constraints
Option 2: suggested by user447951 in their answer
SET FOREIGN_KEY_CHECKS = 0;
TRUNCATE table $table_name;
SET FOREIGN_KEY_CHECKS = 1;
...
How to access command line arguments of the caller inside a function?
...aware of any way to assign directly to the argument array, but if someone knows one, please enlighten me!
Also, note the way I've used and quoted $@ - this is how you ensure special characters (whitespace) don't get mucked up.
...
How do I diff the same file between two different commits on the same branch?
...>...]
For instance, to see the difference for a file "main.c" between now and two commits back, here are three equivalent commands:
$ git diff HEAD^^ HEAD main.c
$ git diff HEAD^^..HEAD -- main.c
$ git diff HEAD~2 HEAD -- main.c
...
Split output of command by columns using Bash?
... space, obviously
$ <command> | sed -e "s/.*/ &/" | tr -s " "
Now, for this particular case of pid numbers (not names), there is a function called pgrep:
$ pgrep ssh
Shell functions
However, in general it is actually still possible to use shell functions in a concise manner, because...
How to declare a global variable in php?
... in your first example, it is saying that the '$variable is now called 'localhost' later in the script?
– Zach Smith
Oct 22 '15 at 14:25
...
How to get git diff with full context?
...
I know this is old, but I also dislike hard-coded solutions, so I tested this:
git diff -U$(wc -l MYFILE)
Using -U seems to be the only way to approach the issue, but using a line count promises that it will work for even a s...