大约有 2,340 项符合查询结果（耗时：0.0308秒） [XML]
Getting root permissions on a file inside of vi? [closed]
...s file, add your_username ALL=(ALL) ALL under the line root ALL=(ALL) ALL, quit and save.
– coolesting
Oct 25 '11 at 3:18
1
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How to see if an NSString starts with a certain other string?
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I like to use this method:
if ([[temp substringToIndex:4] isEqualToString:@"http"]) {
//starts with http
}
or even easier:
if ([temp hasPrefix:@"http"]) {
//do your stuff
}
share
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Error handling in C code
...ifficult." Which part is made difficult by multi-threading? Can you give a quick example?
– SayeedHussain
Jun 18 '13 at 9:57
1
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What’s the best RESTful method to return total number of items in an object?
...far, it’s working great. I can issue GET , POST , PUT and DELETE requests to object URLs and affect my data. However, this data is paged (limited to 30 results at a time).
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Why should eval be avoided in Bash, and what should I use instead?
...the command line (in any shell). On the first pass of parsing one layer of quoting is removed. With quotes removed, some variable content gets executed.
We can fix this by letting the variable expansion take place within the eval. All we have to do is single-quote everything, leaving the double-qu...
Controlling the screenshot in the iOS 7 multitasking switcher
...foreground, you can restore data and views as appropriate.
See Technical Q&A QA1838: Preventing Sensitive Information From Appearing In The Task Switcher
In addition to obscuring/replacing sensitive information, you might also want to tell iOS 7 to not take the screen snapshot via ignoreSnaps...
Stash only one file out of multiple files that have changed with Git?
...ns for each hunk:
y - stash this hunk
n - do not stash this hunk
q - quit; do not stash this hunk or any of the remaining ones
a - stash this hunk and all later hunks in the file
d - do not stash this hunk or any of the later hunks in the file
g - select a hunk to go to
/ - sea...
Save PL/pgSQL output from PostgreSQL to a CSV file
What is the easiest way to save PL/pgSQL output from a PostgreSQL database to a CSV file?
18 Answers
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What's so wrong about using GC.Collect()?
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see also stackoverflow.com/questions/233596/…
– Ian Ringrose
Sep 24 '09 at 15:45
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Any equivalent to .= for adding to beginning of string in PHP?
...ays isset, no need for this double check. Furthermore, since $chunk is a required parameter of the function, it needs to be passed to the function or PHP will complain. This means this check can be abbreviated to if ($chunk) (to see if it's falsy a.k.a. "empty"). But, if $chunk doesn't contain anyth...