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How can one check to see if a remote file exists using PHP?
The best I could find, an if fclose fopen type thing, makes the page load really slowly.
22 Answers
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What does the “assert” keyword do? [duplicate]
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If you launch your program with -enableassertions (or -ea for short) then this statement
assert cond;
is equivalent to
if (!cond)
throw new AssertionError();
If you launch your program without this option, the asser...
Jquery insert new row into table at a certain index
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It should be noticed that if jQuery's eq function is given a negative value, it'll loop around to the end of the table. So running this and trying to insert it on the 0 index will cause the new row to be inserted at the end
– ros...
List comprehension with if statement
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You got the order wrong. The if should be after the for (unless it is in an if-else ternary operator)
[y for y in a if y not in b]
This would work however:
[y if y not in b else other_value for y in a]
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How do I detect if I am in release or debug mode?
... is a boolean value that will be true for a debug build, false otherwise:
if (BuildConfig.DEBUG) {
// do something for a debug build
}
There have been reports that this value is not 100% reliable from Eclipse-based builds, though I personally have not encountered a problem, so I cannot say how ...
Linux Shell中 if else及大于、小于、等于逻辑表达式写法 - C/C++ - 清泛网...
Linux Shell中 if else及大于、小于、等于逻辑表达式写法本文简要介绍Linux Shell if条件测试语句的写法，如比较字符串、判断文件是否存在及是否可读等，通常用 "[] "来表示条件测试。注意：if [ xxx ] 表达式前后都要...
Implementing slicing in __getitem__
...y) and my __getitem__ looks like this:
def __getitem__( self, key ) :
if isinstance( key, slice ) :
#Get the start, stop, and step from the slice
return [self[ii] for ii in xrange(*key.indices(len(self)))]
elif isinstance( key, int ) :
if key < 0 : #Handle negativ...
Detect network connection type on Android
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If the problem is to find whether the phone's network is connected and fast enough to meet your demands you have to handle all the network types returned by getSubType().
It took me an hour or two to research and write this ...
How to avoid scientific notation for large numbers in JavaScript?
JavaScript converts a large INT to scientific notation when the number becomes large. How can I prevent this from happening?
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Get $_POST from multiple checkboxes
...lue="value 5">
<input type="submit" />
</form>
<?php
if(!empty($_POST['check_list'])) {
foreach($_POST['check_list'] as $check) {
echo $check; //echoes the value set in the HTML form for each checked checkbox.
//so, if I were to check 1,...