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Environment variable substitution in sed
... can use other characters besides "/" in substitution:
sed "s#$1#$2#g" -i FILE
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Cannot add or update a child row: a foreign key constraint fails
... @SachinfromPune just add SET FOREIGN_KEY_CHECKS=0; at starting of mysql file and SET FOREIGN_KEY_CHECKS=1; at end of mysql file, reimport data
– inrsaurabh
Sep 15 '17 at 12:26
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How can I access “static” class variables within class methods in Python?
...return foo
bar = get_foo()
Traceback (most recent call last):
File "<pyshell#11>", line 1, in <module>
class B(object):
File "<pyshell#11>", line 5, in B
bar = get_foo()
File "<pyshell#11>", line 4, in get_foo
return foo
NameError: global name 'fo...
“:” (colon) in C struct - what does it mean? [duplicate]
...his is what the new way of assigning to the structure looks like:"
struct file_operations fops = {
read: device_read,
write: device_write,
open: device_open,
release: device_release
};
The C99 (old, compatible) way looks like:
struct file_operations fops = {
.read = device_read,
...
To switch from vertical split to horizontal split fast in Vim
...the accepted answer, as the current accepted answer will only work for two files. This answer is more complete.
– DrStrangepork
Aug 13 '15 at 17:53
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Benefits of EBS vs. instance-store (and vice-versa) [closed]
...d. So I use both - keep the "persistent" stuff on EBS, having all the temp files, logs, "TempDB" database, swap-file and other stuff on Instance-store. BENEFIT FROM BOTH!
– Alex
May 18 '14 at 17:43
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Objective-C pass block as parameter
...d functions to perform anything in background and on main queue.
blocks.h file
void performInBackground(void(^block)(void));
void performOnMainQueue(void(^block)(void));
blocks.m file
#import "blocks.h"
void performInBackground(void(^block)(void)) {
if (nil == block) {
return;
...
Rake just one migration
...ioned here is the integer value at the beginning of each of your migration files (which is just the timestamp of when it was created). For example, VERSION=20150720023630.
– aaron-coding
Jul 20 '15 at 21:36
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Why does an image captured using camera intent gets rotated on some devices on Android?
...mgur.com/DvpvklR.png").into(imageView);
Or
Picasso.with(context).load("file:" + photoPath).into(imageView);
This will autodetect rotation and place image in correct orientation
Picasso is a very powerful library for handling images in your app includes:
Complex image transformations with mini...
How can i use iptables on centos 7? [closed]
...
I modified the /etc/sysconfig/ip6tables-config file changing:
IP6TABLES_SAVE_ON_STOP="no"
To:
IP6TABLES_SAVE_ON_STOP="yes"
And this:
IP6TABLES_SAVE_ON_RESTART="no"
To:
IP6TABLES_SAVE_ON_RESTART="yes"
This seemed to save the changes I made using the iptables c...