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Linux - Replacing spaces in the file names
...
This should do it:
for file in *; do mv "$file" `echo $file | tr ' ' '_'` ; done
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How do I write unit tests in PHP? [closed]
... might need to adjust path if not in the same dir
$bar = 'Hello World';
var_dump(foo($bar));
?>
--EXPECT--
string(11) "Hello World"
In a nutshell, we provide the parameter $bar with value "Hello World" and we var_dump() the response of the function call to foo().
To run this test, use: pear ru...
App Inventor 2 数据可视化教程 - 折线图/曲线图/实时数据绘图 · App Inventor 2 中文网
...线图）
积木块：
// 全局变量
global x计数 = 0
when 按钮_开始.Click() {
计时器1.TimerEnabled = true
二维图表数据1.Clear()
}
when 计时器1.Timer() {
global x计数 = x计数 + 1
global 随机值 = randomInteger(1, 100)
二维图表数据1.AddEntry(x计数, 随...
Calculate distance between 2 GPS coordinates
...y solution:
#include <math.h>
#include "haversine.h"
#define d2r (M_PI / 180.0)
//calculate haversine distance for linear distance
double haversine_km(double lat1, double long1, double lat2, double long2)
{
double dlong = (long2 - long1) * d2r;
double dlat = (lat2 - lat1) * d2r;
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How to “EXPIRE” the “HSET” child key in redis?
... mentioning:
When having a hash, the structure basically looks like:
hash_top_key
- child_key_1 -> some_value
- child_key_2 -> some_value
...
- child_key_n -> some_value
Since we want to add TTL to the child keys, we can move them to top keys. The main point is that the key now ...
How do I create some kind of table of content in GitHub wiki?
If you look here: http://en.wikipedia.org/wiki/Stack_Overflow
9 Answers
9
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How do you round to 1 decimal place in Javascript?
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You might want to create a function for this:
function roundedToFixed(_float, _digits){
var rounded = Math.pow(10, _digits);
return (Math.round(_float * rounded) / rounded).toFixed(_digits);
}
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Extending the User model with custom fields in Django
...o.contrib.auth.models import User
from django.db.models.signals import post_save
class UserProfile(models.Model):
user = models.OneToOneField(User)
#other fields here
def __str__(self):
return "%s's profile" % self.user
def create_user_profile(sender, instance, creat...
How to copy a row and insert in same table with a autoincrement field in MySQL?
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Use INSERT ... SELECT:
insert into your_table (c1, c2, ...)
select c1, c2, ...
from your_table
where id = 1
where c1, c2, ... are all the columns except id. If you want to explicitly insert with an id of 2 then include that in your INSERT column list and your SE...
Unit testing that events are raised in C# (in order)
...n, you can easily extend your existing test:
[TestMethod]
public void Test_ThatMyEventIsRaised()
{
List<string> receivedEvents = new List<string>();
MyClass myClass = new MyClass();
myClass.PropertyChanged += delegate(object sender, PropertyChangedEventArgs e)
{
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