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Removing whitespace from strings in Java
...haracter
\W = Anything that isn't a word character (including punctuation etc)
\s = Anything that is a space character (including space, tab characters etc)
\S = Anything that isn't a space character (including both letters and numbers, as well as punctuation etc)
(Edit: As pointed out, you need...
When should I use a composite index?
...ry, must use a single index for all where-clause, table join, group-by and order-by. So a separate index on each column may not work always but a composite index can do the magic.
– AKHIL MATHEW
Jul 25 at 13:39
...
How can I set the default timezone in node.js?
...
@FlavorScape I use Etc/UTC There are also specific offsets available in Etc, but the offset is reverse of what one would expect. Etc/GMT-1 is UTC + 1 hour. See https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
...
Asynchronous Process inside a javascript for loop [duplicate]
.../rejected when the asynchronous operation is complete. Also, note that in order to use await, the containing function must be declared async.
Run asynchronous operations in parallel and use Promise.all() to collect results in order
function someFunction() {
let promises = [];
for (let ...
对外网用户的squid代理+认证 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...e depend
jiulongproxynew# make
jiulongproxynew# make install
3、配置/etc/rc.conf：
hostname="jiulongproxynew.jscpu.com"
defaultrouter="221.6.117.97"
ifconfig_em0="inet 221.6.117.50 netmask 255.255.255.240"
ifconfig_em1="inet 128.0.0.4 netmask 255.255.252.0"
sendmail_enable="NONE"
inet...
What are the best JVM settings for Eclipse? [closed]
...gc-tuning-6-140523.html#icms, you need to have -XX:+UseConcMarkSweepGC in order to use -XX:+CMSIncrementalMode. That is missing from your example above. We would not need CMSIncrementalMode in case we use G1 GC, am I right?
– RuntimeException
Oct 26 '10 at 1...
What is a thread exit code?
... returned from your process or thread as part of an exit code. The higher order bytes are used by the operating system to convey special information about the process. The exit code is very useful in batch/shell programs which conditionally execute other programs depending on the success or failur...
Selecting a row of pandas series/dataframe by integer index
...
@kilojoules .iloc looks things up by their order in the index (e.g. .iloc[[2]]) is the second "row" in df. That row happens to be at index location 4. .loc looks them up by their index value. So maybe "iloc" is like "i" as in A[i]? :)
– Jim K...
set up device for development (???????????? no permissions)
...b", MODE="0666"
Run the following commands:
sudo cp /tmp/android.rules /etc/udev/rules.d/51-android.rules
sudo chmod 644 /etc/udev/rules.d/51-android.rules
sudo chown root. /etc/udev/rules.d/51-android.rules
sudo service udev restart
sudo killall adb
Disconnect the USB cable between the phone...
What is the difference between SQL, PL-SQL and T-SQL?
... management systems: SQL Server, Oracle, MySQL, PostgreSQL, DB2, Informix, etc.
PL/SQL is a proprietary procedural language used by Oracle
PL/pgSQL is a procedural language used by PostgreSQL
TSQL is a proprietary procedural language used by Microsoft in SQL Server.
Procedural languages are design...