大约有 45,000 项符合查询结果（耗时：0.0350秒） [XML]
Should IBOutlets be strong or weak under ARC?
...&& IsEmpty(self.zip.text)) {
id geocoder = [[geocoderClass alloc] init];
[geocoder reverseGeocodeLocation:newLocation completionHandler:^(NSArray *placemarks, NSError *error) {
if (self.zip && IsEmpty(self.zip.text)) {
self.zip.text = [[pla...
How do I remove newlines from a text file?
...
Using man 1 ed:
# cf. http://wiki.bash-hackers.org/doku.php?id=howto:edit-ed
ed -s file <<< $'1,$j\n,p' # print to stdout
ed -s file <<< $'1,$j\nwq' # in-place edit
share
|
...
How to use timeit module
...
I can only add that how you allocate your budget of 7000 executions (e.g., .repeat(7, 1000) vs. .repeat(2, 3500) vs .repeat(35, 200) should depend on how the error due to system load compares to the error due to input variability. In the extreme case if...
Escape Character in SQL Server
...on't consider it. More info at Google or: http://it.toolbox.com/wiki/index.php/How_do_I_escape_single_quotes_in_SQL_queries%3F
share
|
improve this answer
|
follow
...
Get table names using SELECT statement in MySQL
...o use SHOW TABLES to insert into a table you would use the following
<?php
$sql = "SHOW TABLES FROM $dbname";
$result = mysql_query($sql);
$arrayCount = 0
while ($row = mysql_fetch_row($result)) {
$tableNames[$arrayCount] = $row[0];
$arrayCount++; //only do this to make sure it starts at...
Synchronization vs Lock
...r can there be barging? Method level synchronization ensures fair or FIFO allocation of the lock. Using
synchronized(foo) {
}
or
lock.acquire(); .....lock.release();
does not assure fairness.
If you have lots of contention for the lock you can easily encounter barging where newer requests ...
Does async(launch::async) in C++11 make thread pools obsolete for avoiding expensive thread creation
...anipulate a few bytes on the top of the stack. A threat creation means: 1. allocating a stack, 2. performing a syscall, 3. creating data structures in the kernel and linking them up, grapping locks along the way, 4. waiting for the scheduler to execute the thread, 5. switching context to the thread....
Crop MP3 to first 30 seconds
...exe win32 process. I assume something similar could be done in your Linux/PHP scenario.
share
|
improve this answer
|
follow
|
...
MySQL Query to select data from last week?
...
You can make your calculation in php and then add it to your query:
$date = date('Y-m-d H:i:s',time()-(7*86400)); // 7 days ago
$sql = "SELECT * FROM table WHERE date <='$date' ";
now this will give the date for a week ago
...
Multiple commands on same line
...ndful of commands that don't work with |!
– too much php
Jul 14 '10 at 22:53
33
When you find you...