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How to construct a timedelta object from a simple string
... a string. The user must enter something like "32m" or "2h32m", or even "4:13" or "5hr34m56s"... Is there a library or something that has this sort of thing already implemented?
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App Inventor 2 UDP网络通信教程 - 发送和接收UDP数据包 · App Inventor 2 中文网
... 发送到同网段所有设备
子网广播
如 192.168.1.255
发送到指定子网所有设备（需根据实际网段计算）
组播地址
224.0.0.0 ~ 239.255.255.255
发送到加入同一组播组的设备
UDP 端...
The Concept of 'Hold space' and 'Pattern space' in sed
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111
When sed reads a file line by line, the line that has been currently read is inserted into the...
log all sql queries
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18
Maybe check out https://github.com/django-debug-toolbar/django-debug-toolbar
It'll let you see...
How to export query result to csv in Oracle SQL Developer?
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Version I am using
Update 5th May 2012
Jeff Smith has blogged showing, what I believe is the superior method to get CSV output from SQL Developer. Jeff's method is shown as Method 1 below:
Method 1
Add the comment /*csv*/ to your SQL query and run the query ...
Is cout synchronized/thread-safe?
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106
The C++03 standard does not say anything about it. When you have no guarantees about the threa...
How to work with complex numbers in C?
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186
This code will help you, and it's fairly self-explanatory:
#include <stdio.h> /* S...
What is the best practice for making an AJAX call in Angular.js?
I was reading this article: http://eviltrout.com/2013/06/15/ember-vs-angular.html
4 Answers
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How to save a data.frame in R?
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177
There are several ways. One way is to use save() to save the exact object. e.g. for data frame...