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How to efficiently build a tree from a flat structure?
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trying to convert this approach to C#.
– hakan
Feb 21 '17 at 11:53
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typecast string to integer - Postgres
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If the value contains non-numeric characters, you can convert the value to an integer as follows:
SELECT CASE WHEN <column>~E'^\\d+$' THEN CAST (<column> AS INTEGER) ELSE 0 END FROM table;
The CASE operator checks the < column>, if it matches the integer pat...
PostgreSQL: Is it better to use multiple databases with one schema each, or one database with multip
...n-2-seconds-written-code, don’t use it in production):
import os
import sys
import pg
# Take the new schema name from the second cmd arguments (the first is the filename)
newSchema = sys.argv[1]
# Temperary folder for the dumps
dumpFile = '/test/dumps/' + str(newSchema) + '.sql'
# Settings
db_...
How to find the duration of difference between two dates in java?
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Alternatively long diffInSeconds = TimeUnit.SECONDS.convert(duration,TimeUnit.MILLSECONDS);
– gerardw
Jul 3 '14 at 16:50
3
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How to change letter spacing in a Textview?
.... I get an error like this: "1.2dp" in attribute "letterSpacing" cannot be converted to float."
– dopatraman
Jan 16 '16 at 20:19
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How to allocate aligned memory only using the standard library?
...he system — hence questions and answers like this.)
The next step is to convert the void pointer to a char pointer; GCC notwithstanding, you are not supposed to do pointer arithmetic on void pointers (and GCC has warning options to tell you when you abuse it). Then add 16 to the start pointer. ...
Which Radio button in the group is checked?
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for you vb.net guys, I'll save you a trip to the Telerik converter: Dim checkedButton = radConnections.Controls.OfType(Of RadioButton)().FirstOrDefault(Function(r) r.Checked)
– JoshYates1980
Jun 24 '16 at 17:23
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Never seen before C++ for loop
I was converting a C++ algorithm to C#.
I came across this for loop:
12 Answers
12
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0.1 float is greater than 0.1 double. I expected it to be false [duplicate]
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I'd say the answer depends on the rounding mode when converting the double to float. float has 24 binary bits of precision, and double has 53. In binary, 0.1 is:
0.1₁₀ = 0.0001100110011001100110011001100110011001100110011…₂
^ ^ ^ ^
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Importing CommonCrypto in a Swift framework
... it does require you to create a dummy framework/module that you'll import into your framework proper. We can also ensure it works regardless of platform (iphoneos, iphonesimulator, or macosx).
Add a new framework target to your project and name it after the system library, e.g., "CommonCrypto". (...