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How can I get a count of the total number of digits in a number?
...by @AlanSingfield. This fix (adding a cast to double) causes a computation error when the input value is exactly -999999999999999999: the LOG10 method returns 20 instead of 19. The LOG10 method also must have a if guard for the case when the input value is zero.
The LOG10 method is quite tricky to ...
Multiple glibc libraries on a single host
...he pieces is ld-linux.so.2, and it must match libc.so.6, or you'll see the errors you are seeing.
The absolute path to ld-linux.so.2 is hard-coded into the executable at link time, and can not be easily changed after the link is done.
To build an executable that will work with the new glibc, do th...
Checking for a dirty index or untracked files with Git
.../null| egrep "^(M| M)" | wc -l)
Note: The 2>/dev/null filters out the error messages so you can use these commands on non-git directories. (They'll simply return 0 for the file counts.)
Edit:
Here are the posts:
Adding Git Status Information to your Terminal Prompt
Improved Git-enabled Shel...
Removing multiple keys from a dictionary safely
...rches the same. And this might help.
Update
The above code will throw an error if a key does not exist in the dict.
DICTIONARY = {'a': 'valueA', 'b': 'valueB', 'c': 'valueC', 'd': 'valueD'}
keys = ['a', 'l', 'c']
def remove_keys(key):
try:
DICTIONARY.pop(key, None)
except:
...
Regex to match only letters
...
with python 3 this yields an error bad escape \p at position 0
– matanster
Apr 19 '19 at 16:23
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What is the difference between varchar and nvarchar?
...ead from or write to the database. Conversions take time, and are prone to errors. And recovery from conversion errors is a non-trivial problem.
If you are interfacing with an application that uses only ASCII, I would still recommend using Unicode in the database. The OS and database collation algo...
Global variables in Java
...ou sell your app this will happen sooner or later and you keep looking for error everywhere but not there....
– user387184
Nov 5 '11 at 19:55
10
...
Inline comments for Bash?
...s a valid expression. A real comment would generate something like: syntax error near unexpected token &&'`
– Sebastian Wagner
Sep 13 '18 at 15:59
...
How do I find out which keystore was used to sign an app?
...:78:24:DC:CA:92:36:FF:AE:8C:17:DB
SHA1: 16:59:E7:E3:0C:AA:7A:0D:F2:0D:05:20:12:A8:85:0B:32:C5:4F:68
Signature algorithm name: SHA1withRSA
Then use the keytool again to print out all the aliases of your signing keystore:
keytool -list -keystore my-signing-key.keystore
You will get a li...
Nginx url重写rewrite实例详解 - 更多技术 - 清泛网移动版 - 专注IT技能提升
...et/301-redirect-for-nginx/
输入指令~
/usr/local/nginx/sbin/nginx -t
提示：
the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
configuration file /usr/local/nginx/conf/nginx.conf test is successful
测试成功~ 重启nginx~ 输入指令~
/usr/local/nginx/sbin/nginx -s...