大约有 45,000 项符合查询结果(耗时:0.0637秒) [XML]
Best way to remove from NSMutableArray while iterating?
...I want to loop through an NSMutableArray and remove multiple objects that fit a certain criteria, what's the best way to do this without restarting the loop each time I remove an object?
...
When should I use malloc in C and when don't I?
...mewhere in the read-only part of the memory and you just have a pointer to it. You can use the string as read-only. You cannot make changes to it. Example:
some_memory[0] = 'h';
Is asking for trouble.
On the other hand
some_memory = (char *)malloc(size_to_allocate);
is allocating a char arra...
How can mixed data types (int, float, char, etc) be stored in an array?
... first check the type, then use the corresponding member of the union. A switch statement is useful:
switch (my_array[n].type) {
case is_int:
// Do stuff for integer, using my_array[n].ival
break;
case is_float:
// Do stuff for float, using my_array[n].fval
break;
case is_char:
...
IE8 support for CSS Media Query
...ing for a way of degrading the design for IE8 users, you may find IE's conditional commenting helpful. Using this, you can specify an IE 8/7/6 specific style sheet which over writes the previous rules.
For example:
<link rel="stylesheet" type="text/css" media="all" href="style.css"/>
<!--...
How do I disable text selection with CSS or JavaScript? [duplicate]
I am making a HTML/CSS/jQuery gallery, with several pages.
5 Answers
5
...
Associative arrays in Shell scripts
...add to Irfan's answer, here is a shorter and faster version of get() since it requires no iteration over the map contents:
get() {
mapName=$1; key=$2
map=${!mapName}
value="$(echo $map |sed -e "s/.*--${key}=\([^ ]*\).*/\1/" -e 's/:SP:/ /g' )"
}
...
Service Temporarily Unavailable Magento?
...
Check if there is a file called maintenance.flag and if so delete it.
Magento 1.x : maintenance.flag file is in : magento root directory
Magento 2.x : maintenance.flag file is in : var folder
When Magento is performing certain tasks it temporarily creates this file. Magento ch...
Can I use jQuery with Node.js?
Is it possible to use jQuery selectors/DOM manipulation on the server-side using Node.js?
21 Answers
...
How do I tell git-svn about a remote branch created after I fetched the repo?
I'm using git-svn to work against my company's central Subversion repository. We've recently created a new feature branch in the central repo.
...
How to copy a selection to the OS X clipboard
I have an area selected in Vim. How can I copy it into the OS X clipboard?
27 Answers
...
