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What is the difference between “#!/usr/bin/env bash” and “#!/usr/bin/bash”?
...r in a completely different hierarchy branch (/opt/..., /Applications/..., etc.). That's why these often use the #!/usr/bin/env xxx shebang syntax.
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MongoDB Many-to-Many Association
...use them.
For the case of the User in Roles model, the operations that stretch our atomic write avoidance of locks is adding or removing a User from a Role. In either case, a successful operation results in both a single User and a single Role document being updated. If something fails, it is eas...
Why are elementwise additions much faster in separate loops than in a combined loop?
...d it shows the same performance gap for n = 80000, n = 100000, n = 200000, etc...
– Mysticial
Dec 18 '11 at 1:48
2
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Various ways to remove local Git changes
...aster branch and make sure you are up to date.
git checkout master
git fetch [this may be necessary (depending on your git config) to receive updates on origin/master ]
git pull
# Merge the feature branch into the master branch.
git merge feature_branch
# Reset the master branch to origi...
Byte order mark screws up file reading in Java
...is can be helpful.
Edit: If you need to detect the BOM in UTF-16, UTF-32, etc, then the constructor should be:
new BOMInputStream(is, ByteOrderMark.UTF_8, ByteOrderMark.UTF_16BE,
ByteOrderMark.UTF_16LE, ByteOrderMark.UTF_32BE, ByteOrderMark.UTF_32LE)
Upvote @martin-charlesworth's comment...
Understanding NSRunLoop
...ndle system input sources (sockets, ports, files, keyboard, mouse, timers, etc).
Each NSThread has its own run loop, which can be accessed via the currentRunLoop method.
In general, you do not need to access the run loop directly, though there are some (networking) components that may allow you to...
Servlet returns “HTTP Status 404 The requested resource (/servlet) is not available”
...rvlet 4.0 compatible one (which matches Tomcat 9+, WildFly 11+, Payara 5+, etc).
<?xml version="1.0" encoding="UTF-8"?>
<web-app
xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/java...
What is RSS and VSZ in Linux memory management
...ich has been allocated for normal program startup like text area, globals, etc.
on the second print, we have written to 8388608 KiB == 8GiB worth of pages. As a result, RSS increased by exactly 8GIB to 8390256 KiB == 8388608 KiB + 1648 KiB
RSS continues to increase in 8GiB increments. The last print...
Reference: Comparing PHP's print and echo
...ctual opcodes it makes sense:
line # * op fetch ext return operands
---------------------------------------------------------------------------------
3 0 > PRINT ~0 7
1 PRINT ...
Which is more preferable to use: lambda functions or nested functions ('def')?
..."very rare", it is common for key functions to sorted or itertools.groupby etc., e.g. sorted(['a1', 'b0'], key= lambda x: int(x[1]))
– Chris_Rands
Apr 9 '18 at 12:09
add a com...