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Github Windows 'Failed to sync this branch'
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git stash helped. Hope I will get on with GIT sometime.
– ivkremer
Feb 7 '14 at 21:25
I resta...
How to select the rows with maximum values in each group with dplyr? [duplicate]
... hierarchically sort by multiple columns (for example: a date column and a time-of-day column).
# Answering the question of getting row with max "value".
df %>%
# Within each grouping of A and B values.
group_by( A, B) %>%
# Sort rows in descending order by "value" column.
arrange(...
What does Java option -Xmx stand for? [duplicate]
...arbage collection
-Xloggc:<file> log GC status to a file with time stamps
-Xbatch disable background compilation
-Xms<size> set initial Java heap size
-Xmx<size> set maximum Java heap size
-Xss<size> set java thread stack ...
How to change file encoding in NetBeans?
...eans.org/FaqI18nProjectEncoding
You can change the sources encoding or runtime encoding.
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从Sloodle看三维虚拟学习环境的发展趋势 - 资讯 - 清泛网 - 专注C/C++及内核技术
从Sloodle看三维虚拟学习环境的发展趋势当前教育领域涌现了很多使用基于网络的多用户虚拟环境进行教学的实例 ,如 Active Worlds、Second Life、Wonderland等 ,这些平台有很好的三维模拟环境 ,在教学中使用得越来越广泛 ,但缺乏学习过...
How to programmatically clear application data
...oid clearPreferences() {
try {
// clearing app data
Runtime runtime = Runtime.getRuntime();
runtime.exec("pm clear YOUR_APP_PACKAGE_GOES HERE");
} catch (Exception e) {
e.printStackTrace();
}
}
Warning: the application will force close.
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Query to count the number of tables I have in MySQL
I am growing the number of tables I have and I am sometimes curious just to do a quick command line query to count the number of tables in my database. Is that possible? If so, what is the query?
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How to create a directory using Ansible
... the reasons to do this - even when it seems unnecessary - is because over time your current assumptions fail: a distro/release changes and with it come different umask defaults, or ticket databases can be migrated+deleted (losing track of what command-line arguments deployments/installs declared), ...
How do I rename a column in a database table using SQL?
...se specific methods if you know which database you need to modify ahead of time.
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PHP - iterate on string characters
...plication. @SeaBrightSystems just links to the documentation, which is sometimes not that helpful when a person is trying to see how a function may work, given an example. Otherwise most SO answers would just be links to php.net
– kurdtpage
Aug 16 '16 at 21:50
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