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Get the distance between two geo points
... I think that distanceTo returns the distance between the first and last point but in a rectal line , so if you take any other directions from point a to b its gonna never be accuarated since the path is different, thats when distanceBetween joins in, you can save each distance between the points be...
mmap() vs. reading blocks
...r if you know you can share it with other processes (MAP_SHARED isn't very interesting if there is no actual sharing). Read files normally if you access data sequentially or discard it after reading. And if either method makes your program less complex, do that. For many real world cases there's ...
What's the bad magic number error?
...hex value of first two bytes. In my case, these were 03 f3.
Open calc and convert its display mode to Programmer (Scientific in XP) to see Hex and Decimal conversion. Select "Hex" from Radio button. Enter values as second byte first and then the first byte i.e f303 Now click on "Dec" (Decimal) radi...
Get a filtered list of files in a directory
...ke of passing a string instead of a list. For example if you accidentally convert a string to a list and end up checking against all the characters of a string, you could end up getting a slew of false positives.
But it's better to have a problem that's easy to fix than a solution that's hard to u...
PostgreSQL: How to make “case-insensitive” query
...
Use LOWER function to convert the strings to lower case before comparing.
Try this:
SELECT id
FROM groups
WHERE LOWER(name)=LOWER('Administrator')
share
|
...
Java: How to get input from System.console()
...Using Console to read input (usable only outside of an IDE):
System.out.print("Enter something:");
String input = System.console().readLine();
Another way (works everywhere):
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class Test {
p...
Could not load file or assembly 'System.Net.Http.Formatting' or one of its dependencies. The system
...
This solved my problem as well. I had converted an old Web Site project to a Web Application. The Web.config file was referencing version 5.2.7, while the installed NuGet package was 5.2.3. Deleting this from the Web.config fixed the error.
–...
Read Excel File in Python
...= (sheet.cell(row,col).value)
try:
value = str(int(value))
except ValueError:
pass
finally:
values.append(value)
item = Arm(*values)
items.append(item)
for item in items:
print item
print("Ac...
BLE协议—广播和扫描 - 创客硬件开发 - 清泛IT社区，为创新赋能！
..., /* 设备安全管理OOB标志 */
BLE_AD_TYPE_INT_RANGE = 0x12, /* 设备连接参数范围 */
BLE_AD_TYPE_SOL_SRV_UUID = 0x14,...
How to get a list of installed Jenkins plugins with name and version pair
...
Worked well for me on Mac OS X. I wanted to convert the output to a plain text list, so used some Perl regex to strip the tags: curl 'http://192.168.197.133:8080/pluginManager/api/xml?depth=1&xpath=/*/*/shortName|/*/*/version&wrapper=plugins' | perl -pe 's/.*?&...