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What's the safest way to iterate through the keys of a Perl hash?
...:05
ysth
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answered Aug 6 '08 at 13:22
John Siracusa...
How can I swap positions of two open files (in splits) in vim?
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96
Take a look at :h ctrl-w_ctrl-x and/or :h ctrl-w_ctrl-r. These commands allow you to exchange ...
jQuery form serialize - empty string
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84
Although it doesn't apply to this particular example, the same behavior occurs if one or more f...
How fast is D compared to C++?
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64
To enable all optimizations and disable all safety checks, compile your D program with the foll...
Objective-C : BOOL vs bool
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From the definition in objc.h:
#if (TARGET_OS_IPHONE && __LP64__) || TARGET_OS_WATCH
typedef bool BOOL;
#else
typedef signed char BOOL;
// BOOL is explicitly signed so @encode(BOOL) == "c" rather than "C"
// even if -funsigned-char is used.
#endif
#define YES ((BOOL)1)
#define NO...
How do I update a formula with Homebrew?
...e>", which is again a confusing design.
– xuancong84
Jul 21 at 7:24
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Add column with number of days between dates in DataFrame pandas
...f['B'] = pd.to_datetime(df['B'])
In [11]: df.dtypes # if already datetime64 you don't need to use to_datetime
Out[11]:
A datetime64[ns]
B datetime64[ns]
dtype: object
In [12]: df['A'] - df['B']
Out[12]:
one -58 days
two -26 days
dtype: timedelta64[ns]
In [13]: df['C'] = df['A'] - df['B...
Store JSON object in data attribute in HTML jQuery
...se, i just found the answer to that question here: stackoverflow.com/a/42864472 "You don't need to stringify objects to store them using jQuery.data()"
– user1063287
Aug 7 '19 at 8:04
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MySQL ERROR 1045 (28000): Access denied for user 'bill'@'localhost' (using password: YES)
...'@'%' through a socket.
root@myhost:/home/mysql-5.5.16-linux2.6-x86_64# ./mysql -ubill -ppass --socket=/tmp/mysql-5.5.sock
Welcome to the MySQL monitor (...)
mysql> SELECT user, host FROM mysql.user;
+------+-----------+
| user | host |
+------+-----------+
| ...
How does node.bcrypt.js compare hashed and plaintext passwords without the salt?
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96
The salt is incorporated into the hash (as plaintext). The compare function simply pulls the sa...