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How to initialize log4j properly?
...
Log4j by default looks for a file called log4j.properties or log4j.xml on the classpath.
You can control which file it uses to initialize itself by setting system properties as described here (Look for the "Default Initialization Procedure" sectio...
Python “SyntaxError: Non-ASCII character '\xe2' in file”
...floating around. You can find it by running
with open("x.py") as fp:
for i, line in enumerate(fp):
if "\xe2" in line:
print i, repr(line)
where you should replace "x.py" by the name of your program. You'll see the line number and the offending line(s). For example, afte...
Why is auto_ptr being deprecated?
I heard auto_ptr is being deprecated in C++11. What is the reason for this?
5 Answers
...
How to temporarily exit Vim and go back
...suspend the process and get back to your shell
fg
will resume (bring to foreground) your suspended Vim.
To start a new shell
Start a subshell using:
:sh
(as configured by)
:set shell?
or
:!bash
followed by:
Ctrl+D (or exit, but why type so much?)
to kill the shell and return to Vim.
...
Run MySQLDump without Locking Tables
...use the --single-transaction option:
--lock-tables, -l
Lock all tables before dumping them. The tables are locked with READ
LOCAL to allow concurrent inserts in the case of MyISAM tables. For
transactional tables such as InnoDB and BDB, --single-transaction is
a much better option, because it does...
Transaction isolation levels relation with locks on table
...ant to understand the lock each transaction isolation takes on the table
For example, you have 3 concurrent processes A, B and C. A starts a transaction, writes data and commit/rollback (depending on results). B just executes a SELECT statement to read data. C reads and updates data. All these pro...
How do I create a custom iOS view class and instantiate multiple copies of it (in IB)?
...e.
Remember to #import your timer class in your view controller.
Edit: for IB design (for code instantiation see revision history)
I'm not very familiar at all with storyboard, but I do know that you can construct your interface in IB using a .xib file which is nearly identical to using the sto...
Python Selenium accessing HTML source
... or to click the element..
options = driver.find_elements_by_name_("XXX")
for option in options:
if option.text == "XXXXXX":
print(option.text)
option.click()
You can find the elements by name, XPath, id, link and CSS path.
...
Optimise PostgreSQL for fast testing
I am switching to PostgreSQL from SQLite for a typical Rails application.
2 Answers
2
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How to replace a string in a SQL Server Table Column
...out the CAST function I got an error
Argument data type ntext is invalid for argument 1 of replace function.
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