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Getting and removing the first character of a string
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170
See ?substring.
x <- 'hello stackoverflow'
substring(x, 1, 1)
## [1] "h"
substring(x, 2)
## ...
Postgresql query between date ranges
...example:
SELECT
user_id
FROM
user_logs
WHERE
login_date >= '2014-02-01'
AND login_date < '2014-03-01'
In this case you still need to calculate the start date of the month you need, but that should be straight forward in any number of ways.
The end date is also simplified; just...
How to validate GUID is a GUID
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edited Dec 3 '14 at 15:03
Joseph Woodward
8,70955 gold badges3838 silver badges6161 bronze badges
ans...
Cannot deserialize the JSON array (e.g. [1,2,3]) into type ' ' because type requires JSON object (e.
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answered Mar 21 '14 at 11:40
har07har07
81.6k1212 gold badges6262 silver badges108108 bronze badges
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How to include a child object's child object in Entity Framework 5
...rings
– Ryan Amies
Oct 24 '12 at 14:08
Which version did the lamba method come available? I'm stuck on a EF 4.0 Codeba...
recursively add file extension to all files
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edited Jul 10 '09 at 9:24
answered Jul 10 '09 at 9:14
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What does f+++++++++ mean in rsync logs?
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201
Let's take a look at how rsync works and better understand the cryptic result lines:
1 - A hug...
What is the fastest/most efficient way to find the highest set bit (msb) in an integer in C?
...ion: int __builtin_clz (unsigned int x)
Returns the number of leading 0-bits in X, starting at the most
significant bit position. If X is 0, the result is undefined.
-- Built-in Function: int __builtin_clzl (unsigned long)
Similar to `__builtin_clz', except the argument type is `un...
What is the default scope of a method in Java?
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edited Mar 28 '12 at 19:09
answered Apr 3 '09 at 17:01
Es...
How to have multiple data-bind attributes on one element?
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edited Oct 12 '14 at 22:07
Jeroen
50.2k2727 gold badges161161 silver badges258258 bronze badges
answer...