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Inline functions vs Preprocessor macros
... to add to your example that besides side effect, macro can also introduce extra work load, consider max(fibonacci(100), factorial(10000)) the larger one will get calculated twice :(
– watashiSHUN
Dec 31 '17 at 4:32
...
How to import multiple .csv files at once?
...t;-
list.files(pattern = "*.csv") %>%
map_df(~fread(.))
The stringsAsFactors = FALSE argument keeps the dataframe factor free, (and as marbel points out, is the default setting for fread)
If the typecasting is being cheeky, you can force all the columns to be as characters with the c...
Is it possible to have multiple styles inside a TextView?
...rhaps one way of doing this is through a stub method, say, formatTextWhite(string text) that just inserts the text into the following format string: "<font size="..." color="..." face="...">%s</font>".
– Legend
Aug 11 '12 at 0:03
...
C++ Best way to get integer division and remainder
...and the struct access is optimized away) is a bigger penalty than doing an extra division instruction.
– pezcode
Aug 15 '11 at 20:42
...
Backup/Restore a dockerized PostgreSQL database
..._USER=${DB_USER}
- POSTGRES_PASSWORD=${DB_PASSWORD}
- POSTGRES_EXTRA_OPTS=-Z9 --schema=public --blobs
- SCHEDULE=@every 0h30m00s
- BACKUP_KEEP_DAYS=7
- BACKUP_KEEP_WEEKS=4
- BACKUP_KEEP_MONTHS=6
- HEALTHCHECK_PORT=81
...
Convert a Git folder to a submodule retrospectively?
... can be replaced with the name of a branch if the submodule should only be extracted from this branch.
– adius
Jan 29 '15 at 13:43
...
Oracle Differences between NVL and Coalesce
...om dual; would work as NVL will do an implicit conversion of numeric 10 to string.
select coalesce('abc',10) from dual; will fail with Error - inconsistent datatypes: expected CHAR got NUMBER
Example for UNION use-case
SELECT COALESCE(a, sysdate)
from (select null as a from dual
union
...
Custom fonts and XML layouts (Android)
...ew;
public class TextViewPlus extends TextView {
private static final String TAG = "TextView";
public TextViewPlus(Context context) {
super(context);
}
public TextViewPlus(Context context, AttributeSet attrs) {
super(context, attrs);
setCustomFont(context, ...
MySQL string replace
...w');
-> 'WwWwWw.mysql.com'
http://dev.mysql.com/doc/refman/5.0/en/string-functions.html#function_replace
Note that it's easier if you make that an alias when using SELECT
SELECT REPLACE(string_column, 'search', 'replace') as url....
...
How to order citations by appearance using BibTeX?
...es and rebuild.
If you use MiKTeX you shouldn't need to download anything extra.
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