大约有 7,000 项符合查询结果（耗时：0.0253秒） [XML]
Explain Morris inorder tree traversal without using stacks or recursion
...works:
X
/ \
Y Z
/ \ / \
A B C D
First, X is the root, so it is initialized as current. X has a left child, so X is made the rightmost right child of X's left subtree -- the immediate predecessor to X in an inorder traversal. So X is made the right child of B, then current ...
What is the difference between HAVING and WHERE in SQL?
... Methinks you are quoting me out of context. The question was about mySQL's apparent deviation from the Standard, all but the last paragraph of my answer describes the Standard behaviour, and the last alludes to " the implicit GROUP BY clause mentioned in other answers." Are you saying your d...
How to specify in crontab by what user to run script? [closed]
I have few crontab jobs that run under root, but that gives me some problems. For example all folders created in process of that cron job are under user root and group root.
How can i make it to run under user www-data and group www-data so when i run scripts from my website i can manipulate those ...
Visual Studio: How to “Copy to Output Directory” without copying the folder structure?
...
Keep them in $(ProjectDir)\Lib, but add those files "As a link" to the root of your .csproj. Now they will get copied to bin\Debug (or whatever other output folder) without being in lib.
EDIT: This answer was written way back when ContentWithTargetPath was not available in the versions of VS/MS...
SQL query for today's date minus two months
...
If you use MySQL this would become: MyDate < DATE_ADD(NOW(), INTERVAL -2 MONTH)
– Stefan
Feb 27 '14 at 15:51
...
Selecting only first-level elements in jquery
...
$("ul > li a")
But you would need to set a class on the root ul if you specifically want to target the outermost ul:
<ul class="rootlist">
...
Then it's:
$("ul.rootlist > li a")....
Another way of making sure you only have the root li elements:
$("ul > li a").no...
Difference between validate(), revalidate() and invalidate() in Swing GUI
... synchronized (getTreeLock()) {
invalidate();
Container root = getContainer();
if (root == null) {
// There's no parents. Just validate itself.
validate();
} else {
while (!root.isValidateRoot()) {
if (root.getCon...
Two versions of python on linux. how to make 2.7 the default
...on
cd /usr/bin
ls -l
Here you can see something like this
lrwxrwxrwx 1 root root 9 Mar 7 17:04 python -> python2.7
your default python2.7 is soft linked to the text 'python'
So remove the softlink python
sudo rm -r python
then retry the above command
ls -l
you can see ...
Access-Control-Allow-Origin wildcard subdomains, ports and protocols
...IfModule mod_rewrite.c>
<IfModule mod_headers.c>
# Define the root domain that is allowed
SetEnvIf Origin .+ ACCESS_CONTROL_ROOT=yourdomain.com
# Check that the Origin: matches the defined root domain and capture it in
# an environment var if it does
RewriteEngine On
...
How do I specify the Linq OrderBy argument dynamically?
...and 3.1 for me as well. with the error ~"cant translate". I use Pomelo for MySQl if that is relevant. The problem is the Expression. IF you hand code the expression it works. So instead of Lambda.Expression() just provide something like: LambdaExpression orderByExp1 = (Expression<Func<AgencyS...