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How to make code wait while calling asynchronous calls like Ajax [duplicate]
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answered Dec 25 '12 at 14:31
DogbertDogbert
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How to read data when some numbers contain commas as thousand separator?
..."", and then convert the string to numeric using as.numeric:
y <- c("1,200","20,000","100","12,111")
as.numeric(gsub(",", "", y))
# [1] 1200 20000 100 12111
This was also answered previously on R-Help (and in Q2 here).
Alternatively, you can pre-process the file, for instance with sed in uni...
node.js hash string?
...update(name).digest('hex');
console.log(hash); // 9b74c9897bac770ffc029102a200c5de
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Maven Could not resolve dependencies, artifacts could not be resolved
...e repository
– eis
Jun 19 '13 at 11:20
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What is the most efficient/elegant way to parse a flat table into a tree?
...rsive queries in MySQL 8.0 in my presentation Recursive Query Throwdown in 2017.
Below is my original answer from 2008:
There are several ways to store tree-structured data in a relational database. What you show in your example uses two methods:
Adjacency List (the "parent" column) and
Pa...
How to create a new object instance from a Type
...nstructor(Type.EmptyTypes))
).Compile();
X x = YCreator();
Statistics (2012):
Iterations: 5000000
00:00:00.8481762, Activator.CreateInstance(string, string)
00:00:00.8416930, Activator.CreateInstance(type)
00:00:06.6236752, ConstructorInfo.Invoke
00:00:00.1776255, Compiled e...
How to prevent robots from automatically filling up a form?
...oping to get around required field validators.
http://haacked.com/archive/2007/09/11/honeypot-captcha.aspx
If you create a text box, hide it in javascript, then verify that the value is blank on the server, this weeds out 99% of robots out there, and doesn't cause 99% of your users any frustration...
Print all day-dates between two dates [duplicate]
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I came up with this:
from datetime import date, timedelta
sdate = date(2008, 8, 15) # start date
edate = date(2008, 9, 15) # end date
delta = edate - sdate # as timedelta
for i in range(delta.days + 1):
day = sdate + timedelta(days=i)
print(day)
The output:
2008-08-15
2008...
xcodebuild says does not contain scheme
... related to this problem
– Alix
Mar 20 '14 at 19:35
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Learning to write a compiler [closed]
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answered Jul 20 '09 at 23:01
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